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| author | Evan Cheng <evan.cheng@apple.com> | 2006-05-30 22:13:36 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2006-05-30 22:13:36 +0000 |
| commit | a0eaf2d0c5a7e3230146ae699b99f324557cf7d3 (patch) | |
| tree | c14e68fd3cc44e9dbe82e58bc99e003586ebb14e /lib | |
| parent | aa3c1410b427909da350f2b5e8d4ec3db62a3618 (diff) | |
| download | llvm-a0eaf2d0c5a7e3230146ae699b99f324557cf7d3.tar.gz llvm-a0eaf2d0c5a7e3230146ae699b99f324557cf7d3.tar.bz2 llvm-a0eaf2d0c5a7e3230146ae699b99f324557cf7d3.tar.xz | |
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
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 71504f94d0..47388eae48 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<X86Subtarget>(); - 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); } } |