diff options
| author | Chris Lattner <sabre@nondot.org> | 2004-05-12 16:35:04 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-05-12 16:35:04 +0000 |
| commit | 2b10b08ad623148fd6f7dcb7f2436bbe866c36d1 (patch) | |
| tree | 2b4063a1b3519250b748d049664186a7d5a528b6 /lib/Target/X86/InstSelectSimple.cpp | |
| parent | 587992721c3112c94000722941748cf46cd0bce6 (diff) | |
Pass boolean constants into function calls more efficiently, generating:
mov DWORD PTR [%ESP + 4], 1
instead of:
mov %EAX, 1
mov DWORD PTR [%ESP + 4], %EAX
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13494 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/InstSelectSimple.cpp')
| -rw-r--r-- | lib/Target/X86/InstSelectSimple.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp index 8fbeeb7f2e..cba90bbb96 100644 --- a/lib/Target/X86/InstSelectSimple.cpp +++ b/lib/Target/X86/InstSelectSimple.cpp @@ -1207,7 +1207,7 @@ void ISel::promote32(unsigned targetReg, const ValueRecord &VR) { // copy. if (ConstantInt *CI = dyn_cast<ConstantInt>(Val)) { int TheVal = CI->getRawValue() & 0xFFFFFFFF; - BuildMI(BB, X86::MOV32ri, 1, targetReg).addImm(TheVal); + BuildMI(BB, X86::MOV32ri, 1, targetReg).addImm(TheVal); return; } } @@ -1405,6 +1405,12 @@ void ISel::doCall(const ValueRecord &Ret, MachineInstr *CallMI, unsigned ArgReg; switch (getClassB(Args[i].Ty)) { case cByte: + if (Args[i].Val && isa<ConstantBool>(Args[i].Val)) { + addRegOffset(BuildMI(BB, X86::MOV32mi, 5), X86::ESP, ArgOffset) + .addImm(Args[i].Val == ConstantBool::True); + break; + } + // FALL THROUGH case cShort: if (Args[i].Val && isa<ConstantInt>(Args[i].Val)) { // Zero/Sign extend constant, then stuff into memory. |