[PATCH] D111172: [PS4 UBSAN] Emit ud2 for ubsantrap for the PS4 target.

[Wolfgang Pieb via Phabricator via llvm-commits]

wolfgangp created this revision.
wolfgangp added a reviewer: probinson.
Herald added subscribers: pengfei, hiraditya.
wolfgangp requested review of this revision.
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For the PS4 target we want to emit a ud2 opcode for a ubsantrap instead of ud1.


https://reviews.llvm.org/D111172

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/ubsantrap.ll


Index: llvm/test/CodeGen/X86/ubsantrap.ll
===================================================================
--- llvm/test/CodeGen/X86/ubsantrap.ll
+++ llvm/test/CodeGen/X86/ubsantrap.ll
@@ -1,8 +1,12 @@
 ; RUN: llc -mtriple=x86_64-linux-gnu %s -o - | FileCheck %s
+; RUN: llc -mtriple=x86_64-scei-ps4 %s -o - | FileCheck --check-prefix=PS4 %s
 
 define void @test_ubsantrap() {
 ; CHECK-LABEL: test_ubsantrap
 ; CHECK: ud1l 12(%eax), %eax
+; PS4-LABEL: test_ubsantrap
+; PS4-NOT:   ud1
+; PS4:       ud2
   call void @llvm.ubsantrap(i8 12)
   ret void
 }
Index: llvm/lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- llvm/lib/Target/X86/X86ISelLowering.cpp
+++ llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -534,6 +534,8 @@
   setOperationAction(ISD::TRAP, MVT::Other, Legal);
   setOperationAction(ISD::DEBUGTRAP, MVT::Other, Legal);
   setOperationAction(ISD::UBSANTRAP, MVT::Other, Legal);
+  if (Subtarget.getTargetTriple().isPS4CPU())
+    setOperationAction(ISD::UBSANTRAP, MVT::Other, Expand);
 
   // VASTART needs to be custom lowered to use the VarArgsFrameIndex
   setOperationAction(ISD::VASTART           , MVT::Other, Custom);


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