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SystemZ: Fold copy of vector immediate to gr128 (#90706)
If materializing a constant in a vector register that is just going to be copied to general registers, directly materialize the immediate in the gpr. This will avoid a few lit test regressions in a future commit.
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182 changes: 182 additions & 0 deletions
182
llvm/test/CodeGen/SystemZ/fold-copy-vector-immediate.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4 | ||
# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=peephole-opt -o - %s | FileCheck %s | ||
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--- | ||
name: fold_vgbm_0_copyvr128_to_gr128_virtreg | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: fold_vgbm_0_copyvr128_to_gr128_virtreg | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: [[LGHI:%[0-9]+]]:gr64bit = LGHI 0 | ||
; CHECK-NEXT: [[REG_SEQUENCE:%[0-9]+]]:gr128bit = REG_SEQUENCE [[LGHI]], %subreg.subreg_h64, [[LGHI]], %subreg.subreg_l64 | ||
; CHECK-NEXT: $r0q = COPY [[REG_SEQUENCE]] | ||
; CHECK-NEXT: Return implicit $r0q | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
%3:gr128bit = COPY %2 | ||
$r0q = COPY %3 | ||
Return implicit $r0q | ||
... | ||
|
||
--- | ||
name: fold_vgbm_0_copyvr128_to_gr128_virtreg_multi_use | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: fold_vgbm_0_copyvr128_to_gr128_virtreg_multi_use | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr128bit = COPY [[VGBM]] | ||
; CHECK-NEXT: $r0q = COPY [[COPY2]] | ||
; CHECK-NEXT: $r2q = COPY [[COPY2]] | ||
; CHECK-NEXT: Return implicit $r0q, implicit $r2q | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
%3:gr128bit = COPY %2 | ||
%4:gr128bit = COPY %2 | ||
$r0q = COPY %3 | ||
$r2q = COPY %4 | ||
Return implicit $r0q, implicit $r2q | ||
... | ||
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||
--- | ||
name: fold_vgbm_0_copyvr128_to_gr128_physreg | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: fold_vgbm_0_copyvr128_to_gr128_physreg | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: $r0q = COPY [[VGBM]] | ||
; CHECK-NEXT: Return implicit $r0q | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
$r0q = COPY %2 | ||
Return implicit $r0q | ||
... | ||
|
||
--- | ||
name: no_fold_vgbm_0_copyvr128_to_vr128_virtreg | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: no_fold_vgbm_0_copyvr128_to_vr128_virtreg | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: [[COPY2:%[0-9]+]]:vr128bit = COPY [[VGBM]] | ||
; CHECK-NEXT: $v0 = COPY [[COPY2]] | ||
; CHECK-NEXT: Return implicit $v0 | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
%3:vr128bit = COPY %2 | ||
$v0 = COPY %3 | ||
Return implicit $v0 | ||
... | ||
|
||
--- | ||
name: no_fold_vgbm_0_copyvr128_to_vr128_physreg | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: no_fold_vgbm_0_copyvr128_to_vr128_physreg | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: $v0 = COPY [[VGBM]] | ||
; CHECK-NEXT: Return implicit $v0 | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
$v0 = COPY %2 | ||
Return implicit $v0 | ||
... | ||
|
||
--- | ||
name: fold_vgbm_1_copyvr128_to_gr128_virtreg | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: fold_vgbm_1_copyvr128_to_gr128_virtreg | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 1 | ||
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr128bit = COPY [[VGBM]] | ||
; CHECK-NEXT: $r0q = COPY [[COPY2]] | ||
; CHECK-NEXT: Return implicit $r0q | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 1 | ||
%3:gr128bit = COPY %2 | ||
$r0q = COPY %3 | ||
Return implicit $r0q | ||
... | ||
|
||
--- | ||
name: no_fold_vgbm_0_noncopy_use | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: no_fold_vgbm_0_noncopy_use | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: Return implicit [[VGBM]] | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
Return implicit %2 | ||
... | ||
|
||
--- | ||
name: fold_vgbm_0_copyvr128_to_gr64_subreg_h64 | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $r2d | ||
; CHECK-LABEL: name: fold_vgbm_0_copyvr128_to_gr64_subreg_h64 | ||
; CHECK: liveins: $r2d | ||
; CHECK-NEXT: {{ $}} | ||
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64bit = COPY $r2d | ||
; CHECK-NEXT: [[COPY1:%[0-9]+]]:addr64bit = COPY [[COPY]] | ||
; CHECK-NEXT: [[VGBM:%[0-9]+]]:vr128bit = VGBM 0 | ||
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64bit = COPY [[VGBM]].subreg_h64 | ||
; CHECK-NEXT: $r0d = COPY [[COPY2]] | ||
; CHECK-NEXT: Return implicit $r0d | ||
%0:gr64bit = COPY $r2d | ||
%1:addr64bit = COPY %0 | ||
%2:vr128bit = VGBM 0 | ||
%3:gr64bit = COPY %2.subreg_h64 | ||
$r0d = COPY %3 | ||
Return implicit $r0d | ||
... |