Author: rksimon Date: Thu Sep 29 14:16:52 2016 New Revision: 282753 URL: http://llvm.org/viewvc/llvm-project?rev=282753&view=rev Log: [3.9.1] Merging r280837 [X86] Don't reduce the width of vector mul if the target doesn't support SSE2.
The patch is to fix PR30298, which is caused by rL272694. The solution is to bail out if the target has no SSE2. Differential Revision: https://reviews.llvm.org/D24288 Added: llvm/branches/release_39/test/CodeGen/X86/pr30298.ll - copied unchanged from r280837, llvm/trunk/test/CodeGen/X86/pr30298.ll Modified: llvm/branches/release_39/ (props changed) llvm/branches/release_39/lib/Target/X86/X86ISelLowering.cpp Propchange: llvm/branches/release_39/ ------------------------------------------------------------------------------ --- svn:mergeinfo (original) +++ svn:mergeinfo Thu Sep 29 14:16:52 2016 @@ -1,3 +1,3 @@ /llvm/branches/Apple/Pertwee:110850,110961 /llvm/branches/type-system-rewrite:133420-134817 -/llvm/trunk:155241,275868-275870,275879,275898,275928,275935,275946,275978,275981,276015,276051,276077,276109,276119,276181,276209,276236-276237,276358,276364,276368,276389,276435,276438,276479,276510,276648,276676,276712,276740,276823,276956,276980,277093,277114,277135,277371,277399,277500,277504,277625,277691,277693,277773,278002,278086,278133,278157,278343,278370,278413,278558-278559,278562,278569,278571,278573,278575,278584,278841,278900,278938,278999,279125,279268,279369,279647,281957 +/llvm/trunk:155241,275868-275870,275879,275898,275928,275935,275946,275978,275981,276015,276051,276077,276109,276119,276181,276209,276236-276237,276358,276364,276368,276389,276435,276438,276479,276510,276648,276676,276712,276740,276823,276956,276980,277093,277114,277135,277371,277399,277500,277504,277625,277691,277693,277773,278002,278086,278133,278157,278343,278370,278413,278558-278559,278562,278569,278571,278573,278575,278584,278841,278900,278938,278999,279125,279268,279369,279647,280837,281957 Modified: llvm/branches/release_39/lib/Target/X86/X86ISelLowering.cpp URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_39/lib/Target/X86/X86ISelLowering.cpp?rev=282753&r1=282752&r2=282753&view=diff ============================================================================== --- llvm/branches/release_39/lib/Target/X86/X86ISelLowering.cpp (original) +++ llvm/branches/release_39/lib/Target/X86/X86ISelLowering.cpp Thu Sep 29 14:16:52 2016 @@ -27516,7 +27516,8 @@ static SDValue reduceVMULWidth(SDNode *N const X86Subtarget &Subtarget) { // pmulld is supported since SSE41. It is better to use pmulld // instead of pmullw+pmulhw. - if (Subtarget.hasSSE41()) + // pmullw/pmulhw are not supported by SSE. + if (Subtarget.hasSSE41() || !Subtarget.hasSSE2()) return SDValue(); ShrinkMode Mode; _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
