From 4dc8a1eda314b03118daf8dbd1e2c237c8082eea Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Thu, 8 Jul 2010 16:40:22 +0000 Subject: Convert EXTRACT_SUBREG to COPY when emitting machine instrs. EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead. Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg(). The isMoveInstr hook will be removed later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107879 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86FastISel.cpp | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'lib/Target/X86/X86FastISel.cpp') diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp index f60cbcd..153edea 100644 --- a/lib/Target/X86/X86FastISel.cpp +++ b/lib/Target/X86/X86FastISel.cpp @@ -1039,11 +1039,10 @@ bool X86FastISel::X86SelectShift(const Instruction *I) { TII.copyRegToReg(*MBB, MBB->end(), CReg, Op1Reg, RC, RC, DL); // The shift instruction uses X86::CL. If we defined a super-register - // of X86::CL, emit an EXTRACT_SUBREG to precisely describe what - // we're doing here. + // of X86::CL, emit a subreg KILL to precisely describe what we're doing here. if (CReg != X86::CL) - BuildMI(MBB, DL, TII.get(TargetOpcode::EXTRACT_SUBREG), X86::CL) - .addReg(CReg).addImm(X86::sub_8bit); + BuildMI(MBB, DL, TII.get(TargetOpcode::KILL), X86::CL) + .addReg(CReg, RegState::Kill); unsigned ResultReg = createResultReg(RC); BuildMI(MBB, DL, TII.get(OpReg), ResultReg).addReg(Op0Reg); -- cgit v1.1