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| author | Nadav Rotem <nadav.rotem@intel.com> | 2011-09-21 08:45:10 +0000 |
|---|---|---|
| committer | Nadav Rotem <nadav.rotem@intel.com> | 2011-09-21 08:45:10 +0000 |
| commit | 9c6cdf4c1c82842a97e02bef4cef2431ad2e61a3 (patch) | |
| tree | d20d167bf3c5c409345c86de85c1b166ceb1dcb4 /lib | |
| parent | b5b8d20ddd287992ee286bf5f4d059fd527823ad (diff) | |
| download | external_llvm-9c6cdf4c1c82842a97e02bef4cef2431ad2e61a3.zip external_llvm-9c6cdf4c1c82842a97e02bef4cef2431ad2e61a3.tar.gz external_llvm-9c6cdf4c1c82842a97e02bef4cef2431ad2e61a3.tar.bz2 | |
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
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 175d237..f7aae14 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; |