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-rw-r--r--llvm/lib/Target/X86/X86FastISel.cpp18
1 files changed, 3 insertions, 15 deletions
diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp
index 7b114ddbc38..0146b0730de 100644
--- a/llvm/lib/Target/X86/X86FastISel.cpp
+++ b/llvm/lib/Target/X86/X86FastISel.cpp
@@ -808,21 +808,9 @@ bool X86FastISel::X86SelectBranch(Instruction *I) {
}
const TargetInstrDesc &TID = MI.getDesc();
- const unsigned *ImpDefs = TID.getImplicitDefs();
-
- if (TID.hasUnmodeledSideEffects()) break;
-
- bool ModifiesEFlags = false;
-
- if (ImpDefs) {
- for (unsigned u = 0; ImpDefs[u]; ++u)
- if (ImpDefs[u] == X86::EFLAGS) {
- ModifiesEFlags = true;
- break;
- }
- }
-
- if (ModifiesEFlags) break;
+ if (TID.hasUnmodeledSideEffects() ||
+ TID.hasImplicitDefOfPhysReg(X86::EFLAGS))
+ break;
}
if (SetMI) {
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