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add support for bools to SELECT, this fixes Prolangs-C/bison from the 

testsuite, however 09-vor is still dead (hopefully for other reasons!)

llvm-svn: 21651
This commit is contained in:
Duraid Madina 2005-05-02 06:41:13 +00:00
parent d845d160f6
commit 0e73188c10
1 changed files with 35 additions and 6 deletions
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41
llvm/lib/Target/IA64/IA64ISelPattern.cpp
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@ -1054,19 +1054,48 @@ unsigned ISel::SelectExpr(SDOperand N) {
switch (N.getOperand(1).getValueType()) {
default: assert(0 &&
"ISD::SELECT: 'select'ing something other than i64 or f64!\n");
"ISD::SELECT: 'select'ing something other than i1, i64 or f64!\n");
// for i1, we load the condition into an integer register, then
// conditionally copy Tmp2 and Tmp3 to Tmp1 in parallel (only one
// of them will go through, since the integer register will hold
// either 0 or 1)
case MVT::i1: {
bogoResult=MakeReg(MVT::i1);
// load the condition into an integer register
unsigned condReg=MakeReg(MVT::i64);
unsigned dummy=MakeReg(MVT::i64);
BuildMI(BB, IA64::MOV, 1, dummy).addReg(IA64::r0);
BuildMI(BB, IA64::TPCADDIMM22, 2, condReg).addReg(dummy)
.addImm(1).addReg(Tmp1);
// initialize Result (bool) to false (hence UNC) and if
// the select condition (condReg) is false (0), copy Tmp3
BuildMI(BB, IA64::PCMPEQUNC, 3, bogoResult)
.addReg(condReg).addReg(IA64::r0).addReg(Tmp3);
// now, if the selection condition is true, write 1 to the
// result if Tmp2 is 1
BuildMI(BB, IA64::TPCMPNE, 3, Result).addReg(bogoResult)
.addReg(condReg).addReg(IA64::r0).addReg(Tmp2);
break;
}
// for i64/f64, we just copy Tmp3 and then conditionally overwrite it
// with Tmp2 if Tmp1 is true
case MVT::i64:
bogoResult=MakeReg(MVT::i64);
BuildMI(BB, IA64::MOV, 1, bogoResult).addReg(Tmp3);
BuildMI(BB, IA64::CMOV, 2, Result).addReg(bogoResult).addReg(Tmp2)
.addReg(Tmp1);
break;
case MVT::f64:
bogoResult=MakeReg(MVT::f64);
BuildMI(BB, IA64::FMOV, 1, bogoResult).addReg(Tmp3);
BuildMI(BB, IA64::CFMOV, 2, Result).addReg(bogoResult).addReg(Tmp2)
.addReg(Tmp1);
break;
}
BuildMI(BB, IA64::MOV, 1, bogoResult).addReg(Tmp3);
BuildMI(BB, IA64::CMOV, 2, Result).addReg(bogoResult).addReg(Tmp2)
.addReg(Tmp1); // FIXME: should be FMOV/FCMOV sometimes,
// though this will work for now (no JIT)
return Result;
}