Fix vbroadcast matching logic to early unmatch if the node doesn't have
only one use. Fix PR10825.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138951 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 0d45414..706b1a2 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -6409,12 +6409,16 @@
if (Is256)
V = V.getOperand(1);
- if (V.hasOneUse() && V.getOpcode() != ISD::SCALAR_TO_VECTOR)
+
+ if (!V.hasOneUse())
return false;
// Check the source scalar_to_vector type. 256-bit broadcasts are
// supported for 32/64-bit sizes, while 128-bit ones are only supported
// for 32-bit scalars.
+ if (V.getOpcode() != ISD::SCALAR_TO_VECTOR)
+ return false;
+
unsigned ScalarSize = V.getOperand(0).getValueType().getSizeInBits();
if (ScalarSize != 32 && ScalarSize != 64)
return false;