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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AArch64/GlobalISel/legalize-undef.mir
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2026-09-02 16:34:47 -07:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64 -run-pass=legalizer -O0 %s -o - | FileCheck %s
---
name: test_implicit_def
body: |
bb.0.entry:
liveins:
; CHECK-LABEL: name: test_implicit_def
; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
; CHECK-NEXT: $x0 = COPY [[DEF]](s64)
%0:_(s128) = G_IMPLICIT_DEF
%1:_(s64) = G_TRUNC %0(s128)
$x0 = COPY %1(s64)
...
---
name: test_implicit_def_s3
body: |
bb.0:
liveins:
; CHECK-LABEL: name: test_implicit_def_s3
; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
; CHECK-NEXT: [[SEXT_INREG:%[0-9]+]]:_(s64) = G_SEXT_INREG [[DEF]], 3
; CHECK-NEXT: $x0 = COPY [[SEXT_INREG]](s64)
%0:_(s3) = G_IMPLICIT_DEF
%1:_(s64) = G_SEXT %0
$x0 = COPY %1(s64)
...
# FIXME: s2 not correctly handled
---
name: test_implicit_def_v4s32
body: |
bb.0:
; CHECK-LABEL: name: test_implicit_def_v4s32
; CHECK: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
; CHECK-NEXT: $x0 = COPY [[DEF]](<2 x s32>)
; CHECK-NEXT: $x1 = COPY [[DEF]](<2 x s32>)
%0:_(<4 x s32>) = G_IMPLICIT_DEF
%1:_(<2 x s32> ), %2:_(<2 x s32>) = G_UNMERGE_VALUES %0
$x0 = COPY %1
$x1 = COPY %2
...
---
name: test_implicit_def_v4s64
body: |
bb.0:
; CHECK-LABEL: name: test_implicit_def_v4s64
; CHECK: [[DEF:%[0-9]+]]:_(<2 x s64>) = G_IMPLICIT_DEF
; CHECK-NEXT: $q0 = COPY [[DEF]](<2 x s64>)
; CHECK-NEXT: $q1 = COPY [[DEF]](<2 x s64>)
%0:_(<4 x s64>) = G_IMPLICIT_DEF
%1:_(<2 x s64> ), %2:_(<2 x s64>) = G_UNMERGE_VALUES %0
$q0 = COPY %1
$q1 = COPY %2
...
---
name: test_implicit_def_v2s32
body: |
bb.0:
; CHECK-LABEL: name: test_implicit_def_v2s32
; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
; CHECK-NEXT: $w0 = COPY [[DEF]](s32)
; CHECK-NEXT: $w1 = COPY [[DEF]](s32)
%0:_(<2 x s32>) = G_IMPLICIT_DEF
%1:_(s32), %2:_(s32) = G_UNMERGE_VALUES %0
$w0 = COPY %1
$w1 = COPY %2
...
---
name: test_implicit_def_v16s8
body: |
bb.0:
; CHECK-LABEL: name: test_implicit_def_v16s8
; CHECK: [[DEF:%[0-9]+]]:_(<16 x s8>) = G_IMPLICIT_DEF
; CHECK-NEXT: $q0 = COPY [[DEF]](<16 x s8>)
%0:_(<16 x s8>) = G_IMPLICIT_DEF
$q0 = COPY %0
...
---
name: test_implicit_def_v8s16
body: |
bb.0:
; CHECK-LABEL: name: test_implicit_def_v8s16
; CHECK: [[DEF:%[0-9]+]]:_(<8 x s16>) = G_IMPLICIT_DEF
; CHECK-NEXT: $q0 = COPY [[DEF]](<8 x s16>)
%0:_(<8 x s16>) = G_IMPLICIT_DEF
$q0 = COPY %0
...
---
name: test_implicit_def_s88
body: |
bb.0:
liveins:
; CHECK-LABEL: name: test_implicit_def_s88
; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
; CHECK-NEXT: $x0 = COPY [[DEF]](s64)
%undef:_(s88) = G_IMPLICIT_DEF
%trunc:_(s64) = G_TRUNC %undef
$x0 = COPY %trunc(s64)