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-rw-r--r--lib/Target/X86/X86ISelLowering.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index cab9161f5a..fc2d5ce64e 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -8555,6 +8555,13 @@ SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
if (Swap)
std::swap(Op0, Op1);
+ // Check that the operation in question is available (most are plain SSE2,
+ // but PCMPGTQ and PCMPEQQ have different requirements).
+ if (Opc == X86ISD::PCMPGTQ && !Subtarget->hasSSE42() && !Subtarget->hasAVX())
+ return SDValue();
+ if (Opc == X86ISD::PCMPEQQ && !Subtarget->hasSSE41() && !Subtarget->hasAVX())
+ return SDValue();
+
// Since SSE has no unsigned integer comparisons, we need to flip the sign
// bits of the inputs before performing those operations.
if (FlipSigns) {