From 8da9a6686aa1b76ac038d61d27190a7654f2d495 Mon Sep 17 00:00:00 2001
From: Alex Rosenberg <alexr@leftfield.org>
Date: Mon, 26 Jan 2015 19:09:27 +0000
Subject: [PATCH] Use a different encoding for debugtrap on PS4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227116 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrInfo.td   |  2 ++
 lib/Target/X86/X86InstrSystem.td |  7 ++++---
 lib/Target/X86/X86Subtarget.h    |  1 +
 test/CodeGen/X86/trap.ll         | 20 +++++++++++++++-----
 4 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 8320100ef90..51b6b0f11b6 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -790,6 +790,8 @@ def Not16BitMode : Predicate<"!Subtarget->is16Bit()">,
 def In32BitMode  : Predicate<"Subtarget->is32Bit()">,
                              AssemblerPredicate<"Mode32Bit", "32-bit mode">;
 def IsWin64      : Predicate<"Subtarget->isTargetWin64()">;
+def IsPS4        : Predicate<"Subtarget->isTargetPS4()">;
+def NotPS4       : Predicate<"!Subtarget->isTargetPS4()">;
 def IsNaCl       : Predicate<"Subtarget->isTargetNaCl()">;
 def NotNaCl      : Predicate<"!Subtarget->isTargetNaCl()">;
 def SmallCode    : Predicate<"TM.getCodeModel() == CodeModel::Small">;
diff --git a/lib/Target/X86/X86InstrSystem.td b/lib/Target/X86/X86InstrSystem.td
index 848eeeb07c8..07837bda392 100644
--- a/lib/Target/X86/X86InstrSystem.td
+++ b/lib/Target/X86/X86InstrSystem.td
@@ -38,9 +38,6 @@ def INT3 : I<0xcc, RawFrm, (outs), (ins), "int3",
               [(int_x86_int (i8 3))], IIC_INT3>;
 } // SchedRW
 
-def : Pat<(debugtrap),
-          (INT3)>;
-
 // The long form of "int $3" turns into int3 as a size optimization.
 // FIXME: This doesn't work because InstAlias can't match immediate constants.
 //def : InstAlias<"int\t$3", (INT3)>;
@@ -71,6 +68,10 @@ def IRET64 : RI<0xcf, RawFrm, (outs), (ins), "iretq", [], IIC_IRET>,
              Requires<[In64BitMode]>;
 } // SchedRW
 
+def : Pat<(debugtrap),
+          (INT3)>, Requires<[NotPS4]>;
+def : Pat<(debugtrap),
+          (INT (i8 0x41))>, Requires<[IsPS4]>;
 
 //===----------------------------------------------------------------------===//
 //  Input/Output Instructions.
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 6636b380956..27dec659643 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -403,6 +403,7 @@ public:
   bool isTargetFreeBSD() const { return TargetTriple.isOSFreeBSD(); }
   bool isTargetDragonFly() const { return TargetTriple.isOSDragonFly(); }
   bool isTargetSolaris() const { return TargetTriple.isOSSolaris(); }
+  bool isTargetPS4() const { return TargetTriple.isPS4(); }
 
   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
   bool isTargetCOFF() const { return TargetTriple.isOSBinFormatCOFF(); }
diff --git a/test/CodeGen/X86/trap.ll b/test/CodeGen/X86/trap.ll
index 149c667c8cb..ca33f9e6b4e 100644
--- a/test/CodeGen/X86/trap.ll
+++ b/test/CodeGen/X86/trap.ll
@@ -1,15 +1,25 @@
-; RUN: llc < %s -march=x86 -mcpu=yonah | FileCheck %s
+; RUN: llc < %s -mtriple=i686-apple-darwin8 -mcpu=yonah | FileCheck %s -check-prefix=DARWIN
+; RUN: llc < %s -mtriple=i686-unknown-linux -mcpu=yonah | FileCheck %s -check-prefix=LINUX
+; RUN: llc < %s -mtriple=x86_64-scei-ps4 | FileCheck %s -check-prefix=PS4
 
-; CHECK-LABEL: test0:
-; CHECK: ud2
+; DARWIN-LABEL: test0:
+; DARWIN: ud2
+; LINUX-LABEL: test0:
+; LINUX: ud2
+; PS4-LABEL: test0:
+; PS4: ud2
 define i32 @test0() noreturn nounwind  {
 entry:
 	tail call void @llvm.trap( )
 	unreachable
 }
 
-; CHECK-LABEL: test1:
-; CHECK: int3
+; DARWIN-LABEL: test1:
+; DARWIN: int3
+; LINUX-LABEL: test1:
+; LINUX: int3
+; PS4-LABEL: test1:
+; PS4: int     $65
 define i32 @test1() noreturn nounwind  {
 entry:
 	tail call void @llvm.debugtrap( )
-- 
2.34.1