diff options
| -rw-r--r-- | lib/Target/X86/InstSelectSimple.cpp | 10 | ||||
| -rw-r--r-- | lib/Target/X86/X86ISelSimple.cpp | 10 |
2 files changed, 14 insertions, 6 deletions
diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp index a2e7e6661b..c8802ed74c 100644 --- a/lib/Target/X86/InstSelectSimple.cpp +++ b/lib/Target/X86/InstSelectSimple.cpp @@ -929,9 +929,13 @@ unsigned ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1, BuildMI(*MBB, IP, X86::CMP32rr, 2).addReg(Op0r).addReg(Op1r); break; case cFP: - BuildMI(*MBB, IP, X86::FpUCOM, 2).addReg(Op0r).addReg(Op1r); - BuildMI(*MBB, IP, X86::FNSTSW8r, 0); - BuildMI(*MBB, IP, X86::SAHF, 1); + if (0) { // for processors prior to the P6 + BuildMI(*MBB, IP, X86::FpUCOM, 2).addReg(Op0r).addReg(Op1r); + BuildMI(*MBB, IP, X86::FNSTSW8r, 0); + BuildMI(*MBB, IP, X86::SAHF, 1); + } else { + BuildMI(*MBB, IP, X86::FUCOMIr, 2).addReg(Op0r).addReg(Op1r); + } break; case cLong: diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp index a2e7e6661b..c8802ed74c 100644 --- a/lib/Target/X86/X86ISelSimple.cpp +++ b/lib/Target/X86/X86ISelSimple.cpp @@ -929,9 +929,13 @@ unsigned ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1, BuildMI(*MBB, IP, X86::CMP32rr, 2).addReg(Op0r).addReg(Op1r); break; case cFP: - BuildMI(*MBB, IP, X86::FpUCOM, 2).addReg(Op0r).addReg(Op1r); - BuildMI(*MBB, IP, X86::FNSTSW8r, 0); - BuildMI(*MBB, IP, X86::SAHF, 1); + if (0) { // for processors prior to the P6 + BuildMI(*MBB, IP, X86::FpUCOM, 2).addReg(Op0r).addReg(Op1r); + BuildMI(*MBB, IP, X86::FNSTSW8r, 0); + BuildMI(*MBB, IP, X86::SAHF, 1); + } else { + BuildMI(*MBB, IP, X86::FUCOMIr, 2).addReg(Op0r).addReg(Op1r); + } break; case cLong: |