oota-llvm.git
12 years agoTableGen: Allow conditional instruction pattern in multiclass.
Jim Grosbach [Tue, 17 Jul 2012 00:47:06 +0000 (00:47 +0000)]
TableGen: Allow conditional instruction pattern in multiclass.

Define a 'null_frag' SDPatternOperator node, which if referenced in an
instruction Pattern, results in the pattern being collapsed to be as-if
'[]' had been specified instead. This allows supporting a multiclass
definition where some instaniations have ISel patterns associated and
others do not.

For example,
multiclass myMulti<RegisterClass rc, SDPatternOperator OpNode = null_frag> {
  def _x : myI<(outs rc:), (ins rc:), []>;
  def _r : myI<(outs rc:), (ins rc:), [(set rc:, (OpNode rc:))]>;
}

defm foo : myMulti<GRa, not>;
defm bar : myMulti<GRb>;

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160333 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix function select_cc_f32 in test/CodeGen/Mips/selectcc.ll.
Akira Hatanaka [Mon, 16 Jul 2012 23:56:51 +0000 (23:56 +0000)]
Fix function select_cc_f32 in test/CodeGen/Mips/selectcc.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160329 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDefer checking for registers in the MC AsmMatcher until the after user-defined match...
Owen Anderson [Mon, 16 Jul 2012 23:20:09 +0000 (23:20 +0000)]
Defer checking for registers in the MC AsmMatcher until the after user-defined match classes have been checked.  This allows the creation of MatchClass's that are supersets of a register class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160327 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agofix PR13339 (remove the predecessor from the unwind BB when removing an invoke)
Nuno Lopes [Mon, 16 Jul 2012 22:49:40 +0000 (22:49 +0000)]
fix PR13339 (remove the predecessor from the unwind BB when removing an invoke)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160325 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoteach ConstantRange that zero times X is always zero
Nuno Lopes [Mon, 16 Jul 2012 20:47:16 +0000 (20:47 +0000)]
teach ConstantRange that zero times X is always zero

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160317 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFor something like
Evan Cheng [Mon, 16 Jul 2012 19:35:43 +0000 (19:35 +0000)]
For something like
uint32_t hi(uint64_t res)
{
        uint_32t hi = res >> 32;
        return !hi;
}

llvm IR looks like this:
define i32 @hi(i64 %res) nounwind uwtable ssp {
entry:
  %lnot = icmp ult i64 %res, 4294967296
  %lnot.ext = zext i1 %lnot to i32
  ret i32 %lnot.ext
}

The optimizer has optimize away the right shift and truncate but the resulting
constant is too large to fit in the 32-bit immediate field. The resulting x86
code is worse as a result:
        movabsq $4294967296, %rax       ## imm = 0x100000000
        cmpq    %rax, %rdi
        sbbl    %eax, %eax
        andl    $1, %eax

This patch teaches the x86 lowering code to handle ult against a large immediate
with trailing zeros. It will issue a right shift and a truncate followed by
a comparison against a shifted immediate.
        shrq    $32, %rdi
        testl   %edi, %edi
        sete    %al
        movzbl  %al, %eax

It also handles a ugt comparison against a large immediate with trailing bits
set. i.e. X >  0x0ffffffff -> (X >> 32) >= 1

rdar://11866926

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160312 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMinor cleanup and docs.
Nadav Rotem [Mon, 16 Jul 2012 18:56:39 +0000 (18:56 +0000)]
Minor cleanup and docs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160311 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMIPS: Create two definitions for __builtin_mips_shll_qb builtin.
Simon Atanasyan [Mon, 16 Jul 2012 18:51:39 +0000 (18:51 +0000)]
MIPS: Create two definitions for __builtin_mips_shll_qb builtin.
The first variant accepts immediate number as the second argument.
The second variant accepts register operand as the second argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160307 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMake ComputeDemandedBits return a deterministic result when computing an AssertZext...
Nadav Rotem [Mon, 16 Jul 2012 18:34:53 +0000 (18:34 +0000)]
Make ComputeDemandedBits return a deterministic result when computing an AssertZext value.
In the added testcase the constant 55 was behind an AssertZext of type i1, and ComputeDemandedBits
reported that some of the bits were both known to be one and known to be zero.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160305 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "AMDGPU: Add core backend files for R600/SI codegen v6"
Tom Stellard [Mon, 16 Jul 2012 18:19:53 +0000 (18:19 +0000)]
Revert "AMDGPU: Add core backend files for R600/SI codegen v6"

This reverts commit 4ea70107c5e51230e9e60f0bf58a0f74aa4885ea.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160303 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "include/llvm: Add R600 Intrinsics v6"
Tom Stellard [Mon, 16 Jul 2012 18:19:48 +0000 (18:19 +0000)]
Revert "include/llvm: Add R600 Intrinsics v6"

This reverts commit 600f7a90f3eef4c5108179b43e27cfd9e5de7cdc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160302 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Build script changes for R600/SI Codegen v6"
Tom Stellard [Mon, 16 Jul 2012 18:19:46 +0000 (18:19 +0000)]
Revert "Build script changes for R600/SI Codegen v6"

This reverts commit e3013202259ed1e006c21817c63cf25d75982721.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160301 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "test/CodeGen/R600: Add some basic tests v6"
Tom Stellard [Mon, 16 Jul 2012 18:19:43 +0000 (18:19 +0000)]
Revert "test/CodeGen/R600: Add some basic tests v6"

This reverts commit 11d3457afcda7848448dd7f11b2ede6552ffb9ea.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160300 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Target/AMDGPU/R600KernelParameters.cpp: Fix two includes, <llvm/IRBuilder...
Tom Stellard [Mon, 16 Jul 2012 18:19:41 +0000 (18:19 +0000)]
Revert "Target/AMDGPU/R600KernelParameters.cpp: Fix two includes, <llvm/IRBuilder.h> and <llvm/TypeBuilder.h>"

This reverts commit 0258a6bdd30802f5cc0e8e57c8e768fde2aef590.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160299 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Target/AMDGPU: [CMake] Fix dependencies. 1) Add intrinsics_gen. Add AMDGPUCom...
Tom Stellard [Mon, 16 Jul 2012 18:19:40 +0000 (18:19 +0000)]
Revert "Target/AMDGPU: [CMake] Fix dependencies. 1) Add intrinsics_gen. Add AMDGPUCommonTableGen."

This reverts commit ebc934ba32ee71abbb8f0f2eb6a0fbaa613ba0d2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160298 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Target/AMDGPU/R600KernelParameters.cpp: Don't use "and", "or" as conditional...
Tom Stellard [Mon, 16 Jul 2012 18:19:38 +0000 (18:19 +0000)]
Revert "Target/AMDGPU/R600KernelParameters.cpp: Don't use "and", "or" as conditional operator..."

This reverts commit 29f28bc14ad5a907f5dc849f004fafeec0aab33a.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160297 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Target/AMDGPU/AMDILIntrinsicInfo.cpp: Use llvm_unreachable() in nonreturn...
Tom Stellard [Mon, 16 Jul 2012 18:19:37 +0000 (18:19 +0000)]
Revert "Target/AMDGPU/AMDILIntrinsicInfo.cpp: Use llvm_unreachable() in nonreturn function, instead of assert(0)."

This reverts commit 4ba4acc1bc2561b944a571edbb6a2dc78e357dfe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160296 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert "Target/AMDGPU: Fix includes, or msvc build failed."
Tom Stellard [Mon, 16 Jul 2012 18:19:32 +0000 (18:19 +0000)]
Revert "Target/AMDGPU: Fix includes, or msvc build failed."

This reverts commit fef4aa1b16fcf7a472559abbbcf4c1adc9eb5ca6.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160295 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agomake ConstantRange::getSetSize() properly compute the size of wrapped and full sets.
Nuno Lopes [Mon, 16 Jul 2012 18:08:12 +0000 (18:08 +0000)]
make ConstantRange::getSetSize() properly compute the size of wrapped and full sets.
Make it always return APInts with the same bitwidth for the same ConstantRange bitwidth to simply clients

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160294 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoWith r160248 in place this code is no longer needed.
Chad Rosier [Mon, 16 Jul 2012 17:42:13 +0000 (17:42 +0000)]
With r160248 in place this code is no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160293 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[asan] a bit more refactoring, addressed some of the style comments from chandlerc...
Kostya Serebryany [Mon, 16 Jul 2012 17:12:07 +0000 (17:12 +0000)]
[asan] a bit more refactoring, addressed some of the style comments from chandlerc, partially implemented crash callback merging (under flag)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160290 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMSVC's implementation of isalnum will assert on characters > 255, so we need to use...
Aaron Ballman [Mon, 16 Jul 2012 16:18:18 +0000 (16:18 +0000)]
MSVC's implementation of isalnum will assert on characters > 255, so we need to use an unsigned char to ensure the integer promotion happens properly.  This fixes an assert in debug builds with CodeGen\X86\utf8.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160286 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[asan] refactor instrumentation to allow merging the crash callbacks (not fully imple...
Kostya Serebryany [Mon, 16 Jul 2012 16:15:40 +0000 (16:15 +0000)]
[asan] refactor instrumentation to allow merging the crash callbacks (not fully implemented yet, no functionality change except the BB order)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160284 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTarget/AMDGPU: Fix includes, or msvc build failed.
NAKAMURA Takumi [Mon, 16 Jul 2012 15:43:50 +0000 (15:43 +0000)]
Target/AMDGPU: Fix includes, or msvc build failed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160280 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTarget/AMDGPU/AMDILIntrinsicInfo.cpp: Use llvm_unreachable() in nonreturn function...
NAKAMURA Takumi [Mon, 16 Jul 2012 15:43:09 +0000 (15:43 +0000)]
Target/AMDGPU/AMDILIntrinsicInfo.cpp: Use llvm_unreachable() in nonreturn function, instead of assert(0).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160279 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTarget/AMDGPU/R600KernelParameters.cpp: Don't use "and", "or" as conditional operator...
NAKAMURA Takumi [Mon, 16 Jul 2012 15:42:35 +0000 (15:42 +0000)]
Target/AMDGPU/R600KernelParameters.cpp: Don't use "and", "or" as conditional operator...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160278 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDoubleword Shift Left Logical Plus 32
Jack Carter [Mon, 16 Jul 2012 15:14:51 +0000 (15:14 +0000)]
Doubleword Shift Left Logical Plus 32

Mips shift instructions DSLL, DSRL and DSRA are transformed into
DSLL32, DSRL32 and DSRA32 respectively if the shift amount is between
32 and 63

Here is a description of DSLL:

Purpose: Doubleword Shift Left Logical Plus 32
To execute a left-shift of a doubleword by a fixed amount--32 to 63 bits

Description: GPR[rd] <- GPR[rt] << (sa+32)

The 64-bit doubleword contents of GPR rt are shifted left, inserting
 zeros into the emptied bits; the result is placed in
GPR rd. The bit-shift amount in the range 0 to 31 is specified by sa.

This patch implements the direct object output of these instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160277 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTarget/AMDGPU: [CMake] Fix dependencies. 1) Add intrinsics_gen. Add AMDGPUCommonTableGen.
NAKAMURA Takumi [Mon, 16 Jul 2012 15:09:11 +0000 (15:09 +0000)]
Target/AMDGPU: [CMake] Fix dependencies. 1) Add intrinsics_gen. Add AMDGPUCommonTableGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160276 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTarget/AMDGPU/R600KernelParameters.cpp: Fix two includes, <llvm/IRBuilder.h> and...
NAKAMURA Takumi [Mon, 16 Jul 2012 15:08:47 +0000 (15:08 +0000)]
Target/AMDGPU/R600KernelParameters.cpp: Fix two includes, <llvm/IRBuilder.h> and <llvm/TypeBuilder.h>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160275 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix tests that failed on i686-win32 after r160248:
Alexey Samsonov [Mon, 16 Jul 2012 14:33:36 +0000 (14:33 +0000)]
Fix tests that failed on i686-win32 after r160248:
1. FileCheck-ize epilogue.ll and allow another asm instruction to restore %rsp.
2. Remove check in widen_arith-3.ll that was hitting instruction in epilogue instead of
vector add.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160274 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agotest/CodeGen/R600: Add some basic tests v6
Tom Stellard [Mon, 16 Jul 2012 14:17:19 +0000 (14:17 +0000)]
test/CodeGen/R600: Add some basic tests v6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160273 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoBuild script changes for R600/SI Codegen v6
Tom Stellard [Mon, 16 Jul 2012 14:17:16 +0000 (14:17 +0000)]
Build script changes for R600/SI Codegen v6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160272 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoinclude/llvm: Add R600 Intrinsics v6
Tom Stellard [Mon, 16 Jul 2012 14:17:14 +0000 (14:17 +0000)]
include/llvm: Add R600 Intrinsics v6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160271 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAMDGPU: Add core backend files for R600/SI codegen v6
Tom Stellard [Mon, 16 Jul 2012 14:17:08 +0000 (14:17 +0000)]
AMDGPU: Add core backend files for R600/SI codegen v6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160270 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[asan] initialize asan error callbacks in runOnModule instead of doing that on-demand
Kostya Serebryany [Mon, 16 Jul 2012 14:09:42 +0000 (14:09 +0000)]
[asan] initialize asan error callbacks in runOnModule instead of doing that on-demand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160269 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a bug in the 3-address conversion of LEA when one of the operands is an
Nadav Rotem [Mon, 16 Jul 2012 10:52:25 +0000 (10:52 +0000)]
Fix a bug in the 3-address conversion of LEA when one of the operands is an
undef virtual register. The problem is that ProcessImplicitDefs removes the
definition of the register and marks all uses as undef. If we lose the undef
marker then we get a register which has no def, is not marked as undef. The
live interval analysis does not collect information for these virtual
registers and we crash in later passes.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160260 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert r160254 temporarily.
Chandler Carruth [Mon, 16 Jul 2012 10:01:02 +0000 (10:01 +0000)]
Revert r160254 temporarily.

It turns out that ASan relied on the at-the-end block insertion order to
(purely by happenstance) disable some LLVM optimizations, which in turn
start firing when the ordering is made more "normal". These
optimizations in turn merge many of the instrumentation reporting calls
which breaks the return address based error reporting in ASan.

We're looking at several different options for fixing this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160256 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTeach AddressSanitizer to create basic blocks in a more natural order.
Chandler Carruth [Mon, 16 Jul 2012 08:58:53 +0000 (08:58 +0000)]
Teach AddressSanitizer to create basic blocks in a more natural order.
This is particularly useful to the backend code generators which try to
process things in the incoming function order.

Also, cleanup some uses of IRBuilder to be a bit simpler and more clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160254 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd a basic test for AddressSanitizer. This is just a bare-bones
Chandler Carruth [Mon, 16 Jul 2012 08:56:46 +0000 (08:56 +0000)]
Add a basic test for AddressSanitizer. This is just a bare-bones
functionality test.

In general, unless the functionality is substantially separated, we
should lump more basic testing into this file. The test running
infrastructure likes having a few test files with more comprehensive
testing within them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160253 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd support for attaching branch weight metadata directly from the IRBuilder.
Chandler Carruth [Mon, 16 Jul 2012 07:45:06 +0000 (07:45 +0000)]
Add support for attaching branch weight metadata directly from the IRBuilder.

Added a basic unit test for this with CreateCondBr. I didn't go all the
way and test the switch side as the boilerplate for setting up the
switch IRBuilder unit tests is a lot more. Fortunately, the two share
all the interesting code paths.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160251 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd a boring bit of boilerplate to start testing IRBuilder::CreateCondBr.
Chandler Carruth [Mon, 16 Jul 2012 07:44:51 +0000 (07:44 +0000)]
Add a boring bit of boilerplate to start testing IRBuilder::CreateCondBr.

This is in anticipation of changing CreateCondBr and wanting to test
those changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160250 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove the IRBuilder unittest from Support to VMCore. This got missed in
Chandler Carruth [Mon, 16 Jul 2012 07:44:45 +0000 (07:44 +0000)]
Move the IRBuilder unittest from Support to VMCore. This got missed in
the original move of IRBuilder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160249 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThis CL changes the function prologue and epilogue emitted on X86 when stack needs...
Alexey Samsonov [Mon, 16 Jul 2012 06:54:09 +0000 (06:54 +0000)]
This CL changes the function prologue and epilogue emitted on X86 when stack needs realignment.
It is intended to fix PR11468.

Old prologue and epilogue looked like this:
push %rbp
mov %rsp, %rbp
and $alignment, %rsp
push %r14
push %r15
...
pop %r15
pop %r14
mov %rbp, %rsp
pop %rbp

The problem was to reference the locations of callee-saved registers in exception handling:
locations of callee-saved had to be re-calculated regarding the stack alignment operation. It would
take some effort to implement this in LLVM, as currently MachineLocation can only have the form
"Register + Offset". Funciton prologue and epilogue are now changed to:

push %rbp
mov %rsp, %rbp
push %14
push %15
and $alignment, %rsp
...
lea -$size_of_saved_registers(%rbp), %rsp
pop %r15
pop %r14
pop %rbp

Reviewed by Chad Rosier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160248 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove llvm/Support/TypeBuilder.h -> llvm/TypeBuilder.h. This completes
Chandler Carruth [Sun, 15 Jul 2012 23:45:24 +0000 (23:45 +0000)]
Move llvm/Support/TypeBuilder.h -> llvm/TypeBuilder.h. This completes
the move of *Builder classes into the Core library.

No uses of this builder in Clang or DragonEgg I could find.

If there is a desire to have an IR-building-support library that
contains all of these builders, that can be easily added, but currently
it seems likely that these add no real overhead to VMCore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160243 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUpdate the header guard I missed when moving the header.
Chandler Carruth [Sun, 15 Jul 2012 23:45:20 +0000 (23:45 +0000)]
Update the header guard I missed when moving the header.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160242 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove llvm/Support/MDBuilder.h to llvm/MDBuilder.h, to live with
Chandler Carruth [Sun, 15 Jul 2012 23:26:50 +0000 (23:26 +0000)]
Move llvm/Support/MDBuilder.h to llvm/MDBuilder.h, to live with
IRBuilder, DIBuilder, etc.

This is the proper layering as MDBuilder can't be used (or implemented)
without the Core Metadata representation.

Patches to Clang and Dragonegg coming up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160237 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a bug in the scalarization of BUILD_VECTOR. BUILD_VECTOR elements may be wider...
Nadav Rotem [Sun, 15 Jul 2012 20:39:08 +0000 (20:39 +0000)]
Fix a bug in the scalarization of BUILD_VECTOR. BUILD_VECTOR elements may be wider than the output element type. Make sure to trunc them if needed.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160235 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTeach getTargetVShiftNode about TargetConstant nodes.
Nadav Rotem [Sun, 15 Jul 2012 20:27:43 +0000 (20:27 +0000)]
Teach getTargetVShiftNode about TargetConstant nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160234 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agollvm/test/CodeGen/X86/2012-07-15-broadcastfold.ll: Rewrite expressions to fit various...
NAKAMURA Takumi [Sun, 15 Jul 2012 14:38:35 +0000 (14:38 +0000)]
llvm/test/CodeGen/X86/2012-07-15-broadcastfold.ll: Rewrite expressions to fit various targets.

  - Make sure existence of "barrier".
  - Confirm reload corresponding to spill.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160232 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRename VBROADCASTSDrm into VBROADCASTSDYrm to match the naming convention.
Nadav Rotem [Sun, 15 Jul 2012 12:26:30 +0000 (12:26 +0000)]
Rename VBROADCASTSDrm into VBROADCASTSDYrm to match the naming convention.
Allow the folding of vbroadcastRR to vbroadcastRM, where the memory operand is a spill slot.

PR12782.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160230 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRefactor the code that checks that all operands of a node are UNDEFs.
Nadav Rotem [Sun, 15 Jul 2012 08:38:23 +0000 (08:38 +0000)]
Refactor the code that checks that all operands of a node are UNDEFs.
Add a micro-optimization to getNode of CONCAT_VECTORS when both operands are undefs.
Can't find a testcase for this because VECTOR_SHUFFLE already handles undef operands, but Duncan suggested that we add this.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160229 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReapply r160194, switching to use LV information for finding local kills.
Chandler Carruth [Sun, 15 Jul 2012 03:29:46 +0000 (03:29 +0000)]
Reapply r160194, switching to use LV information for finding local kills.

The notable fix is to look at any dependencies attached to the kill
instruction (or other instructions between MI nad the kill) where the
dependencies are specific to the register in question.

The old code implicitly handled this by rejecting the transform if *any*
other uses were found within the block, but after the start point. The
new code directly finds the kill, and has to re-use the existing
dependency scan to check for non-kill uses.

This was caught by self-host, but I found the bug via inspection and use
of absurd assert scaffolding to compute the kills in two ways and
compare them. So I have no useful testcase for this other than
"bootstrap". I'd work harder to reduce a test case if this particular
code were likely to live for a long time.

Thanks to Benjamin Kramer for reviewing the fix itself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160228 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove IsSameValue from clang's ASTImporter to be methods on the
Eric Christopher [Sun, 15 Jul 2012 00:23:36 +0000 (00:23 +0000)]
Move IsSameValue from clang's ASTImporter to be methods on the
APInt/APSInt classes.

Part of rdar://11875995

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160223 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAVX: Fix a bug in getTargetVShiftNode. The shift amount has to be a 128bit vector...
Nadav Rotem [Sat, 14 Jul 2012 22:26:05 +0000 (22:26 +0000)]
AVX: Fix a bug in getTargetVShiftNode. The shift amount has to be a 128bit vector with the same element type as the input vector.
This is needed because of the patterns we have for the VP[SLL/SRA/SRL][W/D/Q] instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160222 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd a dagcombine optimization to convert concat_vectors of undefs into a single undef.
Nadav Rotem [Sat, 14 Jul 2012 21:30:27 +0000 (21:30 +0000)]
Add a dagcombine optimization to convert concat_vectors of undefs into a single undef.
The unoptimized concat_vectors isd prevented the canonicalization of the vector_shuffle node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160221 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAccount for early-clobber reload instructions.
Jakob Stoklund Olesen [Sat, 14 Jul 2012 18:45:35 +0000 (18:45 +0000)]
Account for early-clobber reload instructions.

No test case, there are no in-tree targets that require this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160219 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoBe more verbose when detecting dominance problems.
Jakob Stoklund Olesen [Fri, 13 Jul 2012 23:39:05 +0000 (23:39 +0000)]
Be more verbose when detecting dominance problems.

Catch uses of undefined physregs that haven't been added to basic block
live-in lists. Run the verifier to pinpoint the problem.

Also run the verifier when a virtual register use is not jointly
dominated by defs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160207 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoLSR Fix: check SCEV expression safety before expansion.
Andrew Trick [Fri, 13 Jul 2012 23:33:10 +0000 (23:33 +0000)]
LSR Fix: check SCEV expression safety before expansion.

All SCEV expressions used by LSR formulae must be safe to
expand. i.e. they may not contain UDiv unless we can prove nonzero
denominator.

Fixes PR11356: LSR hoists UDiv.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160205 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoIVUsers should only generate SCEV's for values that are safe to speculate.
Andrew Trick [Fri, 13 Jul 2012 23:33:05 +0000 (23:33 +0000)]
IVUsers should only generate SCEV's for values that are safe to speculate.

This allows SCEVExpander to run on the IV expressions.

This codifies an assumption made by LSR to complete the fix for
PR11356, but I haven't been able to generate a separate unit test for
this part. I'm adding it as an extra safety check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160204 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFactor SCEV traversal code so I can use it elsewhere. No functionality.
Andrew Trick [Fri, 13 Jul 2012 23:33:03 +0000 (23:33 +0000)]
Factor SCEV traversal code so I can use it elsewhere. No functionality.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160203 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThis is one of the first steps at moving to replace target-dependent
Joel Jones [Fri, 13 Jul 2012 23:25:25 +0000 (23:25 +0000)]
This is one of the first steps at moving to replace target-dependent
intrinsics with target-indepdent intrinsics.  The first instruction(s) to be
handled are the vector versions of count leading zeros (ctlz).

The changes here are to clang so that it generates a target independent
vector ctlz when it sees an ARM dependent vector ctlz.  The changes in llvm
are to match the target independent vector ctlz and in VMCore/AutoUpgrade.cpp
to update any existing bc files containing ARM dependent vector ctlzs with
target-independent ctlzs.  There are also changes to an existing test case in
llvm for ARM vector count instructions and a new test for the bitcode upgrade.

<rdar://problem/11831778>

There is deliberately no test for the change to clang, as so far as I know, no
consensus has been reached regarding how to test neon instructions in clang;
q.v. <rdar://problem/8762292>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160200 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert r160194, which switched to use LV information for finding local
Chandler Carruth [Fri, 13 Jul 2012 22:23:32 +0000 (22:23 +0000)]
Revert r160194, which switched to use LV information for finding local
kills.

This is causing miscompiles that I'm working on tracking down.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160196 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse the LiveVariables information to efficiently get local kills. This
Chandler Carruth [Fri, 13 Jul 2012 21:18:38 +0000 (21:18 +0000)]
Use the LiveVariables information to efficiently get local kills. This
removes the largest scaling problem in the test cases from PR13225 when
ASan is switched to insert basic blocks in the natural CFG order.

It may also solve some scaling problems for more normal code with large
numbers of basic blocks and variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160194 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixed few warnings.
Galina Kistanova [Fri, 13 Jul 2012 21:06:54 +0000 (21:06 +0000)]
Fixed few warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160192 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove variable_ops from call instructions in most targets.
Jakob Stoklund Olesen [Fri, 13 Jul 2012 20:44:29 +0000 (20:44 +0000)]
Remove variable_ops from call instructions in most targets.

Call instructions are no longer required to be variadic, and
variable_ops should only be used for instructions that encode a variable
number of arguments, like the ARM stm/ldm instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160189 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove variable_ops from ARM call instructions.
Jakob Stoklund Olesen [Fri, 13 Jul 2012 20:27:00 +0000 (20:27 +0000)]
Remove variable_ops from ARM call instructions.

Function argument registers are added to the call SDNode, but
InstrEmitter now knows how to make those operands implicit, and the call
instruction doesn't have to be variadic.

Explicit register operands should only be those that are encoded in the
instruction, implicit register operands are for extra dependencies like
call argument and return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160188 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThe Mips specific relocation R_MIPS_GOT_DISP
Jack Carter [Fri, 13 Jul 2012 19:15:47 +0000 (19:15 +0000)]
The Mips specific relocation R_MIPS_GOT_DISP
is used in cases where global symbols are
directly represented in the GOT and we use an
offset into the global offset table.

This patch adds direct object support for R_MIPS_GOT_DISP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160183 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agotest case for revision 160084: Alignment filling between Mips function units
Jack Carter [Fri, 13 Jul 2012 18:14:01 +0000 (18:14 +0000)]
test case for revision 160084: Alignment filling between Mips function units

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160177 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMake helper functions static.
Benjamin Kramer [Fri, 13 Jul 2012 13:25:15 +0000 (13:25 +0000)]
Make helper functions static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160173 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoInitializers for some fields were missing in Option::Option
Alexander Kornienko [Fri, 13 Jul 2012 12:55:23 +0000 (12:55 +0000)]
Initializers for some fields were missing in Option::Option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160170 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReleaseNotes.html: add note about specifying TLS models
Hans Wennborg [Fri, 13 Jul 2012 12:44:23 +0000 (12:44 +0000)]
ReleaseNotes.html: add note about specifying TLS models

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160168 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoPost-dom frontier was removed in 3.0. Patch by chenwj.
Duncan Sands [Fri, 13 Jul 2012 10:11:28 +0000 (10:11 +0000)]
Post-dom frontier was removed in 3.0.  Patch by chenwj.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160166 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRestrict this to x86, hopefully fixing ARM buildbots.
Duncan Sands [Fri, 13 Jul 2012 07:02:00 +0000 (07:02 +0000)]
Restrict this to x86, hopefully fixing ARM buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160163 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMark VINSERTI128rm as MayLoad=1. Fixes PR13348.
Craig Topper [Fri, 13 Jul 2012 05:46:28 +0000 (05:46 +0000)]
Mark VINSERTI128rm as MayLoad=1. Fixes PR13348.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160162 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixed few warnings; trimmed empty lines.
Galina Kistanova [Fri, 13 Jul 2012 01:25:27 +0000 (01:25 +0000)]
Fixed few warnings; trimmed empty lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160159 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoProvide function name in 'Cannot select' fatal error.
Jim Grosbach [Fri, 13 Jul 2012 00:29:09 +0000 (00:29 +0000)]
Provide function name in 'Cannot select' fatal error.

When dumping the DAG for a fatal 'Cannot select' back-end error, also
provide the name of the function the construct is in. Useful when dealing
with large testcases, as the next step is to llvm-extract the function
in question to get a small(er) testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160152 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThe end of the prologue should be marked with is_stmt.
Eric Christopher [Thu, 12 Jul 2012 23:30:25 +0000 (23:30 +0000)]
The end of the prologue should be marked with is_stmt.
Fixes PR13303.

Patch by Paul Robinson!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160148 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTableGen: Assembly matcher 'insufficient operands' diagnostic.
Jim Grosbach [Thu, 12 Jul 2012 21:37:20 +0000 (21:37 +0000)]
TableGen: Assembly matcher 'insufficient operands' diagnostic.

Make sure the tblgen'erated asm matcher correctly returns numoperands+1
as the ErrorInfo when the problem was that there weren't enough operands
specified.

rdar://9142751

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160144 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix check strings in test/MC/Disassembler/Mips/* and run FileCheck.
Akira Hatanaka [Thu, 12 Jul 2012 21:19:32 +0000 (21:19 +0000)]
Fix check strings in test/MC/Disassembler/Mips/* and run FileCheck.

Patch by Vladimir Medic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160143 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixed few warnings.
Galina Kistanova [Thu, 12 Jul 2012 20:45:36 +0000 (20:45 +0000)]
Fixed few warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160142 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoGive the rdrand instructions a SideEffect flag and a chain so MachineCSE and MachineL...
Benjamin Kramer [Thu, 12 Jul 2012 18:14:57 +0000 (18:14 +0000)]
Give the rdrand instructions a SideEffect flag and a chain so MachineCSE and MachineLICM don't touch it.

I already had the necessary things in place for IR-level passes but missed the machine passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160137 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRegenerate.
Eric Christopher [Thu, 12 Jul 2012 17:59:12 +0000 (17:59 +0000)]
Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160134 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThe LIT tests below do not specify the exact cpu model and fail on AVX2 machines...
Nadav Rotem [Thu, 12 Jul 2012 13:45:15 +0000 (13:45 +0000)]
The LIT tests below do not specify the exact cpu model and fail on AVX2 machines, because we select different instructions such as vbroadcast, new shuffles, etc.
Patch by Michael Liao.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160129 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agodetabify
Gabor Greif [Thu, 12 Jul 2012 13:18:13 +0000 (13:18 +0000)]
detabify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160128 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agofix typo in generated comment
Gabor Greif [Thu, 12 Jul 2012 13:05:12 +0000 (13:05 +0000)]
fix typo in generated comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160127 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agollvm/test/CodeGen/X86/rdrand.ll: Relax expression corresponding to Win64 CC.
NAKAMURA Takumi [Thu, 12 Jul 2012 10:22:57 +0000 (10:22 +0000)]
llvm/test/CodeGen/X86/rdrand.ll: Relax expression corresponding to Win64 CC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160124 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agollvm/test/CMakeLists.txt: Add llvm-diff to deps.
NAKAMURA Takumi [Thu, 12 Jul 2012 10:15:48 +0000 (10:15 +0000)]
llvm/test/CMakeLists.txt: Add llvm-diff to deps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160123 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse %s instead of the explicit name, the latter doesn't work in out-of-tree builds.
Benjamin Kramer [Thu, 12 Jul 2012 09:36:29 +0000 (09:36 +0000)]
Use %s instead of the explicit name, the latter doesn't work in out-of-tree builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160120 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd intrinsics for Ivy Bridge's rdrand instruction.
Benjamin Kramer [Thu, 12 Jul 2012 09:31:43 +0000 (09:31 +0000)]
Add intrinsics for Ivy Bridge's rdrand instruction.

The rdrand/cmov sequence is the same that is emitted by both
GCC and ICC.

Fixes PR13284.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160117 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThe result type of EXTRACT_VECTOR_ELT doesn't have to match the element type of
Duncan Sands [Thu, 12 Jul 2012 09:01:35 +0000 (09:01 +0000)]
The result type of EXTRACT_VECTOR_ELT doesn't have to match the element type of
the input vector, it can be bigger (this is helpful for powerpc where <2 x i16>
is a legal vector type but i16 isn't a legal type, IIRC).  However this wasn't
being taken into account by ExpandRes_EXTRACT_VECTOR_ELT, causing PR13220.
Lightly tweaked version of a patch by Michael Liao.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160116 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUpdate GATHER instructions to support 2 read-write operands. Patch from myself and...
Craig Topper [Thu, 12 Jul 2012 06:52:41 +0000 (06:52 +0000)]
Update GATHER instructions to support 2 read-write operands. Patch from myself and Manman Ren.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160110 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoInstcombine was transforming:
Evan Cheng [Thu, 12 Jul 2012 01:45:35 +0000 (01:45 +0000)]
Instcombine was transforming:
  %shr = lshr i64 %key, 3
  %0 = load i64* %val, align 8
  %sub = add i64 %0, -1
  %and = and i64 %sub, %shr
  ret i64 %and

to:
  %shr = lshr i64 %key, 3
  %0 = load i64* %val, align 8
  %sub = add i64 %0, 2305843009213693951
  %and = and i64 %sub, %shr
  ret i64 %and

The demanded bit optimization is actually a pessimization because add -1 would
be codegen'ed as a sub 1. Teach the demanded constant shrinking optimization
to check for negated constant to make sure it is actually reducing the width
of the constant.

rdar://11793464

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160101 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTableGen: Location information for diagnostic.
Jim Grosbach [Thu, 12 Jul 2012 00:53:31 +0000 (00:53 +0000)]
TableGen: Location information for diagnostic.

def Pat<...>;

Results in 'record name is not a string!' diagnostic. Not the best,
but the lack of location information moves it from not very helpful
into completely useless. We're in the Record class when throwing the
error, so just add the location info directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160098 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoARM: fix typo in comments
Manman Ren [Wed, 11 Jul 2012 23:47:00 +0000 (23:47 +0000)]
ARM: fix typo in comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160093 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoARM: Fix optimizeCompare to correctly check safe condition.
Manman Ren [Wed, 11 Jul 2012 22:51:44 +0000 (22:51 +0000)]
ARM: Fix optimizeCompare to correctly check safe condition.

It is safe if CPSR is killed or re-defined.
When we are done with the basic block, check whether CPSR is live-out.
Do not optimize away cmp if CPSR is live-out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160090 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoPatch for Mips direct object generation.
Jack Carter [Wed, 11 Jul 2012 22:17:39 +0000 (22:17 +0000)]
Patch for Mips direct object generation.

When WriteFragmentData() case FT_align called
Asm.getBackend().writeNopData() is called, nothing
is done since Mips implementation of writeNopData just
returned "true".

For some reason this has not caused problems in 32 bit
mode, but in 64 bit mode it caused an assert when processing
multiple function units.

The test case included will assert without this patch. It
runs twice with different flags to prevent false positives
due to changes in code generation over time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160084 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixup broken doc link. Patch by Sean Silva <silvas@purdue.edu>.
Chad Rosier [Wed, 11 Jul 2012 21:49:14 +0000 (21:49 +0000)]
Fixup broken doc link.  Patch by Sean Silva <silvas@purdue.edu>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160082 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoThis change removes an "initialization" warning.
Jack Carter [Wed, 11 Jul 2012 21:41:49 +0000 (21:41 +0000)]
This change removes an "initialization" warning.

Even though variable in question could not
be initialized before use, the code was such that
the compiler had no way of knowing that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160081 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixed diff comparison.
Stepan Dyatkovskiy [Wed, 11 Jul 2012 21:02:57 +0000 (21:02 +0000)]
Fixed diff comparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160076 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoIn MemoryBuffer::getOpenFile() don't verify that the mmap'ed
Argyrios Kyrtzidis [Wed, 11 Jul 2012 20:59:20 +0000 (20:59 +0000)]
In MemoryBuffer::getOpenFile() don't verify that the mmap'ed
file buffer is null-terminated.

If the file is smaller than we thought, mmap will not allow dereferencing
past the pages that are enough to cover the actual file size,
even though we asked for a larger address range.

rdar://11612916

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160075 91177308-0d34-0410-b5e6-96231b3b80d8