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Remove RSTRegClass case from loadRegFromStackSlot

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and storeRegToStackSlot.  Evan and I concluded this
should never be needed and it appears to be true.
(It if is needed, adjustment would be needed for
long double to work.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2007-09-17 20:15:38 +00:00
parent 161660e6d2
commit ca8035e356
2 changed files with 3 additions and 5 deletions
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2
lib/Target/X86/X86FloatingPoint.cpp
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@ -608,7 +608,7 @@ void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
// If we have one _and_ we don't want to pop the operand, duplicate the value
// on the stack instead of moving it. This ensure that popping the value is
// always ok.
// Ditto FISTTP16m, FISTTP32m, FISTTP64m.
// Ditto FISTTP16m, FISTTP32m, FISTTP64m, ST_FpP80m.
//
if (!KillsSrc &&
(MI->getOpcode() == X86::IST_Fp64m32 ||

6
lib/Target/X86/X86RegisterInfo.cpp
View File

@ -170,9 +170,7 @@ void X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
Opc = X86::MOV16_mr;
} else if (RC == &X86::RFP80RegClass) {
Opc = X86::ST_FpP80m; // pops
} else if (RC == &X86::RFP64RegClass || RC == &X86::RSTRegClass) {
/// FIXME spilling long double values as 64 bit does not work.
/// We need RST80, unfortunately.
} else if (RC == &X86::RFP64RegClass) {
Opc = X86::ST_Fp64m;
} else if (RC == &X86::RFP32RegClass) {
Opc = X86::ST_Fp32m;
@ -211,7 +209,7 @@ void X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
Opc = X86::MOV16_rm;
} else if (RC == &X86::RFP80RegClass) {
Opc = X86::LD_Fp80m;
} else if (RC == &X86::RFP64RegClass || RC == &X86::RSTRegClass) {
} else if (RC == &X86::RFP64RegClass) {
Opc = X86::LD_Fp64m;
} else if (RC == &X86::RFP32RegClass) {
Opc = X86::LD_Fp32m;