fix a latent bug my inline asm stuff exposed:

MachineOperand::isIdenticalTo wasn't handling metadata operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100636 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 18 insertions, 0 deletions

diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 39b7fb507f..f2ba484e4f 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -192,6 +192,8 @@ bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
     return getBlockAddress() == Other.getBlockAddress();
   case MachineOperand::MO_MCSymbol:
     return getMCSymbol() == Other.getMCSymbol();
+  case MachineOperand::MO_Metadata:
+    return getMetadata() == Other.getMetadata();
   }
 }
 
diff --git a/test/CodeGen/X86/crash.ll b/test/CodeGen/X86/crash.ll
index 4b7c850993..312d15f6d5 100644
--- a/test/CodeGen/X86/crash.ll
+++ b/test/CodeGen/X86/crash.ll
@@ -92,3 +92,19 @@ foo:
 }
 
 
+; Crash commoning identical asms.
+define void @test6(i1 %C) nounwind optsize ssp {
+entry:
+  br i1 %C, label %do.body55, label %do.body92
+
+do.body55:                                        ; preds = %if.else36
+  call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0
+  ret void
+
+do.body92:                                        ; preds = %if.then66
+  call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !1
+  ret void
+}
+
+!0 = metadata !{i32 633550}                       
+!1 = metadata !{i32 634261}