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This is the real fix for Codegen/X86/2004-04-13-FPCMOV-Crash.llx which works

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even when the "optimization" I added before is turned off.  It generates this
extremely pointless code:

test:
        fld QWORD PTR [%ESP + 4]
        mov %AL, 0
        test %AL, %AL
        fcmove %ST(0), %ST(0)
        ret

Good thing the optimizer will have removed this before code generation
anyway.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12939 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-04-14 02:42:32 +00:00
parent f1d483d641
commit 098e945fbd
2 changed files with 16 additions and 14 deletions
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15
lib/Target/X86/FloatingPoint.cpp
View File

@@ -682,13 +682,14 @@ void FPS::handleCondMovFP(MachineBasicBlock::iterator &I) {
MI->getOperand(0).setReg(getSTReg(Op1));
// If we kill the second operand, make sure to pop it from the stack.
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
if (KI->second == X86::FP0+Op1) {
// Get this value off of the register stack.
freeStackSlotAfter(I, Op1);
break;
}
if (Op0 != Op1)
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
if (KI->second == X86::FP0+Op1) {
// Get this value off of the register stack.
freeStackSlotAfter(I, Op1);
break;
}
}

15
lib/Target/X86/X86FloatingPoint.cpp
View File

@@ -682,13 +682,14 @@ void FPS::handleCondMovFP(MachineBasicBlock::iterator &I) {
MI->getOperand(0).setReg(getSTReg(Op1));
// If we kill the second operand, make sure to pop it from the stack.
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
if (KI->second == X86::FP0+Op1) {
// Get this value off of the register stack.
freeStackSlotAfter(I, Op1);
break;
}
if (Op0 != Op1)
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
if (KI->second == X86::FP0+Op1) {
// Get this value off of the register stack.
freeStackSlotAfter(I, Op1);
break;
}
}