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Diffstat (limited to 'lib/Target/ARM/ARMInstrThumb.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb.td | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td index b1f0459501..e8d3e228ec 100644 --- a/lib/Target/ARM/ARMInstrThumb.td +++ b/lib/Target/ARM/ARMInstrThumb.td @@ -120,7 +120,10 @@ def t_addrmode_sp : Operand<i32>, // Miscellaneous Instructions. // -let Defs = [SP], Uses = [SP] in { +// FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE +// from removing one half of the matched pairs. That breaks PEI, which assumes +// these will always be in pairs, and asserts if it finds otherwise. Better way? +let Defs = [SP], Uses = [SP], hasSideEffects = 1 in { def tADJCALLSTACKUP : PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary, "@ tADJCALLSTACKUP $amt1", |