replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Dont' set flags 

llvm-svn: 4797
This commit is contained in:
Chris Lattner 2002-11-21 01:59:50 +00:00
parent 6985c19b61
commit 3a3ac9d225
1 changed files with 5 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
llvm/lib/Target/X86/InstSelectSimple.cpp
View File

@ -240,7 +240,7 @@ ISel::visitSetCondInst (SetCondInst & I)
// Move fp status word (concodes) to ax.
BuildMI (BB, X86::FNSTSWr8, 1, X86::AX);
// Load real concodes from ax.
BuildMI (BB, X86::SAHF, 1, X86::EFLAGS).addReg(X86::AH);
BuildMI (BB, X86::SAHF, 1).addReg(X86::AH);
}
else
{ // integer comparison
@ -250,16 +250,13 @@ ISel::visitSetCondInst (SetCondInst & I)
switch (comparisonWidth)
{
case 1:
BuildMI (BB, X86::CMPrr8, 2,
X86::EFLAGS).addReg (reg1).addReg (reg2);
BuildMI (BB, X86::CMPrr8, 2).addReg (reg1).addReg (reg2);
break;
case 2:
BuildMI (BB, X86::CMPrr16, 2,
X86::EFLAGS).addReg (reg1).addReg (reg2);
BuildMI (BB, X86::CMPrr16, 2).addReg (reg1).addReg (reg2);
break;
case 4:
BuildMI (BB, X86::CMPrr32, 2,
X86::EFLAGS).addReg (reg1).addReg (reg2);
BuildMI (BB, X86::CMPrr32, 2).addReg (reg1).addReg (reg2);
break;
case 8:
default:
@ -413,7 +410,7 @@ ISel::visitBranchInst (BranchInst & BI)
// followed by jump-if-equal to ifFalse, and jump-if-nonequal to
// ifTrue
unsigned int condReg = getReg (BI.getCondition ());
BuildMI (BB, X86::CMPri8, 2, X86::EFLAGS).addReg (condReg).addZImm (0);
BuildMI (BB, X86::CMPri8, 2).addReg (condReg).addZImm (0);
BuildMI (BB, X86::JNE, 1).addPCDisp (BI.getSuccessor (0));
BuildMI (BB, X86::JE, 1).addPCDisp (BI.getSuccessor (1));
}