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Modify existing support functions to use new immediate constant predicates.

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Patch by Jim Laskey


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22710 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-08 21:12:35 +00:00
parent cf1cf1886e
commit 8fd1980ce6
1 changed files with 9 additions and 10 deletions
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19
lib/Target/PowerPC/PPCISelPattern.cpp
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@ -1136,11 +1136,10 @@ bool ISel::SelectBitfieldInsert(SDOperand OR, unsigned Result) {
/// wider than the implicit mask, then we can get rid of the AND and let the
/// shift do the mask.
unsigned ISel::FoldIfWideZeroExtend(SDOperand N) {
unsigned C;
unsigned C, MB, ME;
if (N.getOpcode() == ISD::AND &&
5 == getImmediateForOpcode(N.getOperand(1), ISD::AND, C) && // isMask
31 == (C & 0xFFFF) && // ME
26 >= (C >> 16)) // MB
isImmediate(N.getOperand(1), C) && isRunOfOnes(C, MB, ME) &&
MB <= 26 && ME == 31)
return SelectExpr(N.getOperand(0));
else
return SelectExpr(N);
@ -1162,10 +1161,10 @@ unsigned ISel::SelectCC(SDOperand CC, unsigned& Opc, bool &Inv, unsigned& Idx) {
Opc = getBCCForSetCC(SetCC->getCondition(), U);
Idx = getCRIdxForSetCC(SetCC->getCondition(), Inv);
// Pass the optional argument U to getImmediateForOpcode for SETCC,
// so that it knows whether the SETCC immediate range is signed or not.
if (1 == getImmediateForOpcode(SetCC->getOperand(1), ISD::SETCC,
Tmp2, U)) {
// Use U to determine whether the SETCC immediate range is signed or not.
if (isImmediate(SetCC->getOperand(1), Tmp2) &&
((U && isUInt16(Tmp2)) || (!U && isInt16(Tmp2)))) {
Tmp2 = Lo16(Tmp2);
// For comparisons against zero, we can implicity set CR0 if a recording
// variant (e.g. 'or.' instead of 'or') of the instruction that defines
// operand zero of the SetCC node is available.
@ -1252,8 +1251,8 @@ unsigned ISel::SelectAddr(SDOperand N, unsigned& Reg, int& offset)
unsigned imm = 0, opcode = N.getOpcode();
if (N.getOpcode() == ISD::ADD) {
bool isFrame = N.getOperand(0).getOpcode() == ISD::FrameIndex;
if (1 == getImmediateForOpcode(N.getOperand(1), opcode, imm)) {
offset = imm;
if (isImmediate(N.getOperand(1), imm) && isInt16(imm)) {
offset = Lo16(imm);
if (isFrame) {
++FrameOff;
Reg = cast<FrameIndexSDNode>(N.getOperand(0))->getIndex();