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Explicitly mark LEApcrel pseudos with hasSideEffects.

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It's not clear that they should be marked as such, but tbb formation
fails if t2LEApcrelJT is hoisted of of a loop.

This doesn't change the flags on these instructions,
UnmodeledSideEffects was already inferred from the missing pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162603 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-08-24 21:44:11 +00:00
parent aaaecfce70
commit 7778ee1ed9
2 changed files with 4 additions and 0 deletions
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3
lib/Target/ARM/ARMInstrInfo.td
View File

@ -1794,12 +1794,15 @@ def ADR : AI1<{0,?,?,0}, (outs GPR:$Rd), (ins adrlabel:$label),
let Inst{15-12} = Rd;
let Inst{11-0} = label{11-0};
}
let hasSideEffects = 1 in {
def LEApcrel : ARMPseudoInst<(outs GPR:$Rd), (ins i32imm:$label, pred:$p),
4, IIC_iALUi, []>;
def LEApcrelJT : ARMPseudoInst<(outs GPR:$Rd),
(ins i32imm:$label, nohash_imm:$id, pred:$p),
4, IIC_iALUi, []>;
}
//===----------------------------------------------------------------------===//
// Control Flow Instructions.

1
lib/Target/ARM/ARMInstrThumb2.td
View File

@ -1200,6 +1200,7 @@ def t2ADR : T2PCOneRegImm<(outs rGPR:$Rd),
let neverHasSideEffects = 1, isReMaterializable = 1 in
def t2LEApcrel : t2PseudoInst<(outs rGPR:$Rd), (ins i32imm:$label, pred:$p),
4, IIC_iALUi, []>;
let hasSideEffects = 1 in
def t2LEApcrelJT : t2PseudoInst<(outs rGPR:$Rd),
(ins i32imm:$label, nohash_imm:$id, pred:$p),
4, IIC_iALUi,