From a0eaf2d0c5a7e3230146ae699b99f324557cf7d3 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 30 May 2006 22:13:36 +0000 Subject: [PATCH] Somehow I lost a condition when I was shuffling some code around. Anyway, only transform a shufps to pshufd when the first two operands are the same. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28575 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86InstrInfo.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 71504f94d02..47388eae483 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -125,11 +125,11 @@ MachineInstr *X86InstrInfo::convertToThreeAddress(MachineInstr *MI) const { case X86::SHUFPSrri: { assert(MI->getNumOperands() == 4 && "Unknown shufps instruction!"); const X86Subtarget *Subtarget = &TM.getSubtarget(); - if (!Subtarget->hasSSE2()) return 0; unsigned A = MI->getOperand(0).getReg(); unsigned B = MI->getOperand(1).getReg(); unsigned C = MI->getOperand(2).getReg(); unsigned M = MI->getOperand(3).getImmedValue(); + if (!Subtarget->hasSSE2() || B != C) return 0; return BuildMI(X86::PSHUFDri, 2, A).addReg(B).addImm(M); } }