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Change TargetLowering::getRegClassFor to take an MVT, instead of EVT.

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Accordingly, add helper funtions getSimpleValueType (in parallel to
getValueType) in SDValue, SDNode, and TargetLowering.

This is the first, in a series of patches.

This is the second attempt. In the first attempt (r169837), a few
getSimpleVT() were hoisted too far, detected by bootstrap failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170104 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Patrik Hagglund
2012-12-13 06:34:11 +00:00
parent e3ec87a6f7
commit a61b17c18a
13 changed files with 89 additions and 81 deletions
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lib/CodeGen/SelectionDAG/FastISel.cpp
+5 -7
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@@ -737,11 +737,10 @@ bool FastISel::SelectBitCast(const User *I) {
}
// Bitcasts of other values become reg-reg copies or BITCAST operators.
EVT SrcVT = TLI.getValueType(I->getOperand(0)->getType());
EVT DstVT = TLI.getValueType(I->getType());
MVT SrcVT = TLI.getSimpleValueType(I->getOperand(0)->getType());
MVT DstVT = TLI.getSimpleValueType(I->getType());
if (SrcVT == MVT::Other || !SrcVT.isSimple() ||
DstVT == MVT::Other || !DstVT.isSimple() ||
if (SrcVT == MVT::Other || DstVT == MVT::Other ||
!TLI.isTypeLegal(SrcVT) || !TLI.isTypeLegal(DstVT))
// Unhandled type. Halt "fast" selection and bail.
return false;
@@ -755,7 +754,7 @@ bool FastISel::SelectBitCast(const User *I) {
// First, try to perform the bitcast by inserting a reg-reg copy.
unsigned ResultReg = 0;
if (SrcVT.getSimpleVT() == DstVT.getSimpleVT()) {
if (SrcVT == DstVT) {
const TargetRegisterClass* SrcClass = TLI.getRegClassFor(SrcVT);
const TargetRegisterClass* DstClass = TLI.getRegClassFor(DstVT);
// Don't attempt a cross-class copy. It will likely fail.
@@ -768,8 +767,7 @@ bool FastISel::SelectBitCast(const User *I) {
// If the reg-reg copy failed, select a BITCAST opcode.
if (!ResultReg)
ResultReg = FastEmit_r(SrcVT.getSimpleVT(), DstVT.getSimpleVT(),
ISD::BITCAST, Op0, Op0IsKill);
ResultReg = FastEmit_r(SrcVT, DstVT, ISD::BITCAST, Op0, Op0IsKill);
if (!ResultReg)
return false;