Handle multiple ret values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48254 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48253 91177308-0d34-0410-b5e6-96231b3b80d8

Check to see if a two-entry PHI block can be simplified
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48252 91177308-0d34-0410-b5e6-96231b3b80d8

Make this test more challenging to help it avoid being
optimized away before it tests what it is intended to test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48251 91177308-0d34-0410-b5e6-96231b3b80d8

Update testcase for recent aliases change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48250 91177308-0d34-0410-b5e6-96231b3b80d8

Honour aliases visibility during asm emission

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48249 91177308-0d34-0410-b5e6-96231b3b80d8

Honour aliases visibility when reading from/writing to bitcode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48248 91177308-0d34-0410-b5e6-96231b3b80d8

Add a test to ensure that all-ones vectors are materialized with pcmpeqd.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48247 91177308-0d34-0410-b5e6-96231b3b80d8

Transfer physical register spill info when load / store folding happens.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48246 91177308-0d34-0410-b5e6-96231b3b80d8

Use the correct value for InSignBit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48245 91177308-0d34-0410-b5e6-96231b3b80d8

Initial codegen support for functions and calls with multiple return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48244 91177308-0d34-0410-b5e6-96231b3b80d8

Implement basic support for the 'f' register class constraint.  This basically
works, but probably won't if you mix it with 't' or 'u' yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48243 91177308-0d34-0410-b5e6-96231b3b80d8

coalesce away 80-bit floating point copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48241 91177308-0d34-0410-b5e6-96231b3b80d8

convert a massive if statement to a switch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48240 91177308-0d34-0410-b5e6-96231b3b80d8

start handling the 'f' x87 constraint.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48239 91177308-0d34-0410-b5e6-96231b3b80d8

Skip functions that return multiple values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48233 91177308-0d34-0410-b5e6-96231b3b80d8

The feature this is testing did not work in the general case,
and has been removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48232 91177308-0d34-0410-b5e6-96231b3b80d8

Fix getOperand() for ReturnInst.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48229 91177308-0d34-0410-b5e6-96231b3b80d8

Become multiple return value aware.
Right now, the pass does not optimize tail recursions
involving multiple return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48228 91177308-0d34-0410-b5e6-96231b3b80d8

Add TODO reminder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48227 91177308-0d34-0410-b5e6-96231b3b80d8

Give PassManager and FunctionPassManager a common base class, with
add(Pass *) as a pure virtual member function. This will allow all
the various addPassesTo* functions in LLVM to avoid hard-coding what
type of PassManager is used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48226 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos in comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48225 91177308-0d34-0410-b5e6-96231b3b80d8

Missed part of recommit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48224 91177308-0d34-0410-b5e6-96231b3b80d8

Recommitting parts of r48130. These do not appear to cause the observed failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48223 91177308-0d34-0410-b5e6-96231b3b80d8

Recommitting changes after more testing. These appear to cause no problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48222 91177308-0d34-0410-b5e6-96231b3b80d8

Use TargetRegisterInfo::getPhysicalRegisterRegClass. Remove duplicated code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48221 91177308-0d34-0410-b5e6-96231b3b80d8

If there are multiple register classes that a register belongs to, return the super-class (e.g. on x86, returns GR32, not GR32_).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48220 91177308-0d34-0410-b5e6-96231b3b80d8

Learn how to xfail a test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48219 91177308-0d34-0410-b5e6-96231b3b80d8

When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8

In 32-bit mode, mark 64-bit GPR's as unallocatable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48217 91177308-0d34-0410-b5e6-96231b3b80d8

XFAIL due to Dale's change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48216 91177308-0d34-0410-b5e6-96231b3b80d8

Some LegalizeTypes code factorization and minor
enhancements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48215 91177308-0d34-0410-b5e6-96231b3b80d8

compile: double test() {}

into:

_test:
fldz
ret

instead of:

_test:
subl $12, %esp
#IMPLICIT_DEF %xmm0
movsd %xmm0, (%esp)
fldl (%esp)
addl $12, %esp
ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48213 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the build on gcc 4.2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48212 91177308-0d34-0410-b5e6-96231b3b80d8

fix grammer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48211 91177308-0d34-0410-b5e6-96231b3b80d8

Initial multiple return values support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48210 91177308-0d34-0410-b5e6-96231b3b80d8

Change the model for FP Stack return to use fp operands on the
RET instruction instead of using FpSET_ST0_32.  This also generalizes
the code to handling returning of multiple FP results.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48209 91177308-0d34-0410-b5e6-96231b3b80d8

variadic instructions don't have operand info for variadic arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48208 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrade this test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48207 91177308-0d34-0410-b5e6-96231b3b80d8

Generalize ExpandIntToFP to handle the case where the operand is legal
and it's the result that requires expansion. This code is a little confusing
because the TargetLoweringInfo tables for [US]INT_TO_FP use the operand type
(the integer type) rather than the result type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48206 91177308-0d34-0410-b5e6-96231b3b80d8

If a register operand comes from the variadic part of a node, don't
verify the register constraint matches what the instruction expects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48205 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily revert 48175.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48204 91177308-0d34-0410-b5e6-96231b3b80d8

Fix thinko: alias always defines new symbol. Even is aliasee itself is undefined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48203 91177308-0d34-0410-b5e6-96231b3b80d8

More APInt-ification.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48201 91177308-0d34-0410-b5e6-96231b3b80d8

emit an ID # for each regclass ID.  Chris doesn't like to have to count.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48200 91177308-0d34-0410-b5e6-96231b3b80d8

abort with an assert instead of a cerr to get line#

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48199 91177308-0d34-0410-b5e6-96231b3b80d8

Use utostr instead of a stringstream.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48198 91177308-0d34-0410-b5e6-96231b3b80d8

- Style cleanup in IA64ISelLowering.h: add 'virtual' keyword for consistency.
- Add test pattern matching in CellSPU's icmp32.ll test harness
- Fix CellSPU fcmp.ll-generated assert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48197 91177308-0d34-0410-b5e6-96231b3b80d8

Correctly clone FlaggedNodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48196 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize ArgTypes directly instead of manually copying in the elements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48195 91177308-0d34-0410-b5e6-96231b3b80d8

APInt-ify this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48194 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an unnecessary #include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48193 91177308-0d34-0410-b5e6-96231b3b80d8

Don't emit FP_REG_KILL into a block that just returns.  Nothing
can be live out of the block anyway, so it isn't needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48192 91177308-0d34-0410-b5e6-96231b3b80d8

Implement more support for fp-to-i128 and i128-to-fp conversions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48189 91177308-0d34-0410-b5e6-96231b3b80d8

Disable prolog code that aligns the stack when a
local object of >16 byte alignment exists.  It does not
work and getting it to work is not trivial, as explained
in the comment.  This fixes all the remaining ppc32
failures in the struct-layout-1 part of the gcc testsuite.

(gcc does not support this either, and the only way to
get such an object is with __attribute__((aligned)) or
generic vectors; it can't be done in a standard-conforming
program, or with Altivec.  So I think disabling it is OK.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48188 91177308-0d34-0410-b5e6-96231b3b80d8

Update llc flags for PPC register scavenger.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48187 91177308-0d34-0410-b5e6-96231b3b80d8

Change the "enable/disable" mechanism so that we can enable PPC register
scavenging for 32-bit and 64-bit separately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48186 91177308-0d34-0410-b5e6-96231b3b80d8

Add sanity checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48184 91177308-0d34-0410-b5e6-96231b3b80d8

Typo: 'function' => 'alias'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48183 91177308-0d34-0410-b5e6-96231b3b80d8

Syntactic sugar'ify stuff :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48182 91177308-0d34-0410-b5e6-96231b3b80d8

Always run 'make check' :) Fix fallout from prev. commit: query for possible
alias destination only if we don't have anything to link to

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48181 91177308-0d34-0410-b5e6-96231b3b80d8

Make error messages to have common style

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48180 91177308-0d34-0410-b5e6-96231b3b80d8

Properly link globals with aliases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48179 91177308-0d34-0410-b5e6-96231b3b80d8

This passes now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48178 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the LinkGlobal weirderness in common linking phase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48177 91177308-0d34-0410-b5e6-96231b3b80d8

Typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48176 91177308-0d34-0410-b5e6-96231b3b80d8

If the register allocator ran out of registers, just abort for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48175 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate the FP_GET_ST0/FP_SET_ST0 target-specific dag nodes, just lower to
copyfromreg/copytoreg instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48174 91177308-0d34-0410-b5e6-96231b3b80d8

Document multiple return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48173 91177308-0d34-0410-b5e6-96231b3b80d8

Fix mul expansion to check the correct number of bits for
zero extension when checking if an unsigned multiply is
safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48171 91177308-0d34-0410-b5e6-96231b3b80d8

Somewhat better solution.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48170 91177308-0d34-0410-b5e6-96231b3b80d8

Default ISD::PREFETCH to expand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48169 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 48125, 48126, and 48130 for now to unbreak some x86-64 tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48167 91177308-0d34-0410-b5e6-96231b3b80d8

fix 80 col violations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48166 91177308-0d34-0410-b5e6-96231b3b80d8

The __sync primitives only work on x86 and alpha;
xfail this test elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48164 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48163 91177308-0d34-0410-b5e6-96231b3b80d8

Restore optimization that merges blocks when inline function
has single return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48162 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48161 91177308-0d34-0410-b5e6-96231b3b80d8

simplify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48160 91177308-0d34-0410-b5e6-96231b3b80d8

Add -m32 to compilation line; test is only valid in
32-bit environment.  PR 2136.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48159 91177308-0d34-0410-b5e6-96231b3b80d8

Stylistic modifications. No functionality changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48158 91177308-0d34-0410-b5e6-96231b3b80d8

These tests don't work unless SSE2 is active.
Judging from the checking comments this is intentional,
so add the flag (makes them pass on non-x86 host).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48157 91177308-0d34-0410-b5e6-96231b3b80d8

There is no "-mattr=+sse1" flag; fix test for non-x86 hosts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48156 91177308-0d34-0410-b5e6-96231b3b80d8

Use uint64_t not unsigned long long.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48154 91177308-0d34-0410-b5e6-96231b3b80d8

Integer comparison tests for CellSPU.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48152 91177308-0d34-0410-b5e6-96231b3b80d8

Fix formatting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48151 91177308-0d34-0410-b5e6-96231b3b80d8

Refresh Makefile.ocaml in objdir if it is modified in srcdir.

Patch by Erick Tryzelaar!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48150 91177308-0d34-0410-b5e6-96231b3b80d8

Refresh Makefile.ocaml in objdir if it is modified in srcdir.

Patch by Erick Tryzelaar!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48149 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48148 91177308-0d34-0410-b5e6-96231b3b80d8

Adding ocamldoc generation.

Patch by Erick Tryzelaar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48147 91177308-0d34-0410-b5e6-96231b3b80d8

Formatting improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48146 91177308-0d34-0410-b5e6-96231b3b80d8

Give TargetLowering::getSetCCResultType() a parameter so that ISD::SETCC's
return ValueType can depend its operands' ValueType.

This is a cosmetic change, no functionality impacted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48145 91177308-0d34-0410-b5e6-96231b3b80d8

Add description of individual bits in CR. This fix PR1765.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48143 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cleanup. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48142 91177308-0d34-0410-b5e6-96231b3b80d8

- Fix a subtle bug in RemoveCopyByCommutingDef. ALR is the live range where the source is defined; BLR is the live range which is defined by the copy.
If ALR and BLR overlaps and end of BLR extends beyond end of ALR, e.g.
 A = or A, B
 ...
 B = A
 ...
 C = A<kill>
 ...
   = B

then do not add kills of A to the newly created B interval.
- Also fix some kill info update bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48141 91177308-0d34-0410-b5e6-96231b3b80d8

Doh

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48140 91177308-0d34-0410-b5e6-96231b3b80d8

Add nosubmit option to control what is sent back to the results server.
Patch by Joachim Durchholz. Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48139 91177308-0d34-0410-b5e6-96231b3b80d8

Move StrongPHIElimination after live interval analysis.  This will make things happier down the road.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48138 91177308-0d34-0410-b5e6-96231b3b80d8

Remove llvm-upgrade and update tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48137 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid creating BUILD_VECTOR of all zero elements of "non-normalized" type (e.g. v8i16 on x86) after legalizer. Instruction selection does not expect to see them. In all likelihood this can only be an issue in a bugpoint reduced test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48136 91177308-0d34-0410-b5e6-96231b3b80d8