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Add bundle aware API for querying instruction properties and switch the code

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generator to it. For non-bundle instructions, these behave exactly the same
as the MC layer API.

For properties like mayLoad / mayStore, look into the bundle and if any of the
bundled instructions has the property it would return true.
For properties like isPredicable, only return true if *all* of the bundled
instructions have the property.
For properties like canFoldAsLoad, isCompare, conservatively return false for
bundles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-12-07 07:15:52 +00:00
parent 5729c5848c
commit 5a96b3dad2
69 changed files with 596 additions and 354 deletions
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lib/Target/ARM/ARMConstantIslandPass.cpp
+4 -4
View File
@@ -495,7 +495,7 @@ void ARMConstantIslands::JumpTableFunctionScan(MachineFunction &MF) {
for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
I != E; ++I)
if (I->getDesc().isBranch() && I->getOpcode() == ARM::t2BR_JT)
if (I->isBranch() && I->getOpcode() == ARM::t2BR_JT)
T2JumpTables.push_back(I);
}
}
@@ -547,7 +547,7 @@ void ARMConstantIslands::InitialFunctionScan(MachineFunction &MF,
BBI.Unalign = isThumb ? 1 : 2;
int Opc = I->getOpcode();
if (I->getDesc().isBranch()) {
if (I->isBranch()) {
bool isCond = false;
unsigned Bits = 0;
unsigned Scale = 1;
@@ -1738,7 +1738,7 @@ bool ARMConstantIslands::OptimizeThumb2JumpTables(MachineFunction &MF) {
MachineInstr *MI = T2JumpTables[i];
const MCInstrDesc &MCID = MI->getDesc();
unsigned NumOps = MCID.getNumOperands();
unsigned JTOpIdx = NumOps - (MCID.isPredicable() ? 3 : 2);
unsigned JTOpIdx = NumOps - (MI->isPredicable() ? 3 : 2);
MachineOperand JTOP = MI->getOperand(JTOpIdx);
unsigned JTI = JTOP.getIndex();
assert(JTI < JT.size());
@@ -1861,7 +1861,7 @@ bool ARMConstantIslands::ReorderThumb2JumpTables(MachineFunction &MF) {
MachineInstr *MI = T2JumpTables[i];
const MCInstrDesc &MCID = MI->getDesc();
unsigned NumOps = MCID.getNumOperands();
unsigned JTOpIdx = NumOps - (MCID.isPredicable() ? 3 : 2);
unsigned JTOpIdx = NumOps - (MI->isPredicable() ? 3 : 2);
MachineOperand JTOP = MI->getOperand(JTOpIdx);
unsigned JTI = JTOP.getIndex();
assert(JTI < JT.size());