diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/InstSelectSimple.cpp | 26 | ||||
| -rw-r--r-- | lib/Target/X86/X86ISelSimple.cpp | 26 |
2 files changed, 44 insertions, 8 deletions
diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp index c62e68da27..3479b73d20 100644 --- a/lib/Target/X86/InstSelectSimple.cpp +++ b/lib/Target/X86/InstSelectSimple.cpp @@ -1552,10 +1552,28 @@ void ISel::emitCastOperation(MachineBasicBlock *BB, // Implement casts to bool by using compare on the operand followed by set if // not zero on the result. if (DestTy == Type::BoolTy) { - if (SrcClass == cFP || SrcClass == cLong) - abort(); // FIXME: implement cast (long & FP) to bool - - BMI(BB, IP, X86::CMPri8, 2).addReg(SrcReg).addZImm(0); + switch (SrcClass) { + case cByte: + BMI(BB, IP, X86::TESTrr8, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cShort: + BMI(BB, IP, X86::TESTrr16, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cInt: + BMI(BB, IP, X86::TESTrr32, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cLong: { + unsigned TmpReg = makeAnotherReg(Type::IntTy); + BMI(BB, IP, X86::ORrr32, 2, TmpReg).addReg(SrcReg).addReg(SrcReg+1); + break; + } + case cFP: + assert(0 && "FIXME: implement cast FP to bool"); + abort(); + } + + // If the zero flag is not set, then the value is true, set the byte to + // true. BMI(BB, IP, X86::SETNEr, 1, DestReg); return; } diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp index c62e68da27..3479b73d20 100644 --- a/lib/Target/X86/X86ISelSimple.cpp +++ b/lib/Target/X86/X86ISelSimple.cpp @@ -1552,10 +1552,28 @@ void ISel::emitCastOperation(MachineBasicBlock *BB, // Implement casts to bool by using compare on the operand followed by set if // not zero on the result. if (DestTy == Type::BoolTy) { - if (SrcClass == cFP || SrcClass == cLong) - abort(); // FIXME: implement cast (long & FP) to bool - - BMI(BB, IP, X86::CMPri8, 2).addReg(SrcReg).addZImm(0); + switch (SrcClass) { + case cByte: + BMI(BB, IP, X86::TESTrr8, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cShort: + BMI(BB, IP, X86::TESTrr16, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cInt: + BMI(BB, IP, X86::TESTrr32, 2).addReg(SrcReg).addReg(SrcReg); + break; + case cLong: { + unsigned TmpReg = makeAnotherReg(Type::IntTy); + BMI(BB, IP, X86::ORrr32, 2, TmpReg).addReg(SrcReg).addReg(SrcReg+1); + break; + } + case cFP: + assert(0 && "FIXME: implement cast FP to bool"); + abort(); + } + + // If the zero flag is not set, then the value is true, set the byte to + // true. BMI(BB, IP, X86::SETNEr, 1, DestReg); return; } |