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R600/SI: Add pattern for bitcasting fp immediates to integers

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The backend now assumes that all immediates are integers.  This allows
us to simplify immediate handling code, becasue we no longer need to
handle fp and integer immediates differently.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2015-01-13 22:59:41 +00:00
parent a28a251950
commit d90e5063ca
8 changed files with 39 additions and 56 deletions
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9
lib/Target/R600/SIFoldOperands.cpp
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@ -173,7 +173,7 @@ bool SIFoldOperands::runOnMachineFunction(MachineFunction &MF) {
continue;
MachineOperand &OpToFold = MI.getOperand(1);
bool FoldingImm = OpToFold.isImm() || OpToFold.isFPImm();
bool FoldingImm = OpToFold.isImm();
// FIXME: We could also be folding things like FrameIndexes and
// TargetIndexes.
@ -210,12 +210,7 @@ bool SIFoldOperands::runOnMachineFunction(MachineFunction &MF) {
if (FoldingImm) {
const TargetRegisterClass *UseRC = MRI.getRegClass(UseOp.getReg());
if (OpToFold.isFPImm()) {
Imm = OpToFold.getFPImm()->getValueAPF().bitcastToAPInt();
} else {
Imm = APInt(64, OpToFold.getImm());
}
Imm = APInt(64, OpToFold.getImm());
// Split 64-bit constants into 32-bits for folding.
if (UseOp.getSubReg()) {