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[AArch64] Disable AArch64StorePairSuppress under optsize 

AArch64StorePairSuppress will prevent the creation of LDP's based on
scheduling info. This shouldn't apply when optimizing for size though,
where the size decrease should be considered more important.

Differential Revision: https://reviews.llvm.org/D110809
This commit is contained in:
David Green 2021-10-04 18:28:15 +01:00
parent 6fcb857746
commit 30dc53db36
2 changed files with 7 additions and 13 deletions
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2
llvm/lib/Target/AArch64/AArch64StorePairSuppress.cpp
View File

@ -119,7 +119,7 @@ bool AArch64StorePairSuppress::isNarrowFPStore(const MachineInstr &MI) {
}
bool AArch64StorePairSuppress::runOnMachineFunction(MachineFunction &MF) {
if (skipFunction(MF.getFunction()))
if (skipFunction(MF.getFunction()) || MF.getFunction().hasOptSize())
return false;
const TargetSubtargetInfo &ST = MF.getSubtarget();

18
llvm/test/CodeGen/AArch64/storepairsuppress_minsize.ll
View File

@ -38,12 +38,9 @@ define void @test_minsize() minsize {
; CHECK-NEXT: bl return_in_block
; CHECK-NEXT: adrp x8, in_block_store
; CHECK-NEXT: add x8, x8, :lo12:in_block_store
; CHECK-NEXT: str d0, [x8]
; CHECK-NEXT: str d1, [x8, #8]
; CHECK-NEXT: str d2, [x8, #16]
; CHECK-NEXT: str d3, [x8, #24]
; CHECK-NEXT: str d4, [x8, #32]
; CHECK-NEXT: str d5, [x8, #40]
; CHECK-NEXT: stp d0, d1, [x8]
; CHECK-NEXT: stp d2, d3, [x8, #16]
; CHECK-NEXT: stp d4, d5, [x8, #32]
; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT: ret
%1 = call %T_IN_BLOCK @return_in_block()
@ -60,12 +57,9 @@ define void @test_optsize() optsize {
; CHECK-NEXT: bl return_in_block
; CHECK-NEXT: adrp x8, in_block_store
; CHECK-NEXT: add x8, x8, :lo12:in_block_store
; CHECK-NEXT: str d0, [x8]
; CHECK-NEXT: str d1, [x8, #8]
; CHECK-NEXT: str d2, [x8, #16]
; CHECK-NEXT: str d3, [x8, #24]
; CHECK-NEXT: str d4, [x8, #32]
; CHECK-NEXT: str d5, [x8, #40]
; CHECK-NEXT: stp d0, d1, [x8]
; CHECK-NEXT: stp d2, d3, [x8, #16]
; CHECK-NEXT: stp d4, d5, [x8, #32]
; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-NEXT: ret
%1 = call %T_IN_BLOCK @return_in_block()