From 9c6cdf4c1c82842a97e02bef4cef2431ad2e61a3 Mon Sep 17 00:00:00 2001 From: Nadav Rotem Date: Wed, 21 Sep 2011 08:45:10 +0000 Subject: [PATCH] Insert a sanity check on the combining of x86 truncing-store nodes. This comes to replace the problematic check that was removed in r139995. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140246 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86ISelLowering.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 175d23750e2..f7aae14bba0 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -13563,6 +13563,9 @@ static SDValue PerformSTORECombine(SDNode *N, SelectionDAG &DAG, // From, To sizes and ElemCount must be pow of two if (!isPowerOf2_32(NumElems * FromSz * ToSz)) return SDValue(); + // We are going to use the original vector elt for storing. + // accumulated smaller vector elements must be a multiple of the store size. + if (0 != (NumElems * FromSz) % ToSz) return SDValue(); unsigned SizeRatio = FromSz / ToSz;