From eafa9d50c2be7900d3cab2079123f1e91a54bcbd Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Fri, 14 Oct 2011 00:39:50 +0000 Subject: V_SET0 has no side effects. TableGen will mark any pattern-less instruction as having unmodeled side effects. This is extra bad for V_SET0 which gets rematerialized a lot. This was part of the cause for PR11125, but the real bug was fixed in r141923. llvm-svn: 141924 --- llvm/lib/Target/X86/X86InstrSSE.td | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'llvm') diff --git a/llvm/lib/Target/X86/X86InstrSSE.td b/llvm/lib/Target/X86/X86InstrSSE.td index 520de683f10..d3ced23450f 100644 --- a/llvm/lib/Target/X86/X86InstrSSE.td +++ b/llvm/lib/Target/X86/X86InstrSSE.td @@ -266,7 +266,7 @@ let isReMaterializable = 1, isAsCheapAsAMove = 1, isCodeGenOnly = 1, // We set canFoldAsLoad because this can be converted to a constant-pool // load of an all-zeros value if folding it would be beneficial. let isReMaterializable = 1, isAsCheapAsAMove = 1, canFoldAsLoad = 1, - isPseudo = 1 in { + isPseudo = 1, neverHasSideEffects = 1 in { def V_SET0 : I<0, Pseudo, (outs VR128:$dst), (ins), "", []>; } -- cgit v1.2.3