legalize-undef.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=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: [[DEF1:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
; CHECK: [[MV:%[0-9]+]]:_(s128) = G_MERGE_VALUES [[DEF]](s64), [[DEF1]](s64)
; CHECK: [[TRUNC:%[0-9]+]]:_(s64) = G_TRUNC [[MV]](s128)
; CHECK: $x0 = COPY [[TRUNC]](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: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 61
; CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[DEF]], [[C]](s64)
; CHECK: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[SHL]], [[C]](s64)
; CHECK: $x0 = COPY [[ASHR]](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]+]]:_(<4 x s32>) = G_IMPLICIT_DEF
; CHECK: [[UV:%[0-9]+]]:_(<2 x s32>), [[UV1:%[0-9]+]]:_(<2 x s32>) = G_UNMERGE_VALUES [[DEF]](<4 x s32>)
; CHECK: $x0 = COPY [[UV]](<2 x s32>)
; CHECK: $x1 = COPY [[UV1]](<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: [[DEF1:%[0-9]+]]:_(<2 x s64>) = G_IMPLICIT_DEF
; CHECK: $q0 = COPY [[DEF]](<2 x s64>)
; CHECK: $q1 = COPY [[DEF1]](<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]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
; CHECK: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](<2 x s32>)
; CHECK: $w0 = COPY [[UV]](s32)
; CHECK: $w1 = COPY [[UV1]](s32)
%0:_(<2 x s32>) = G_IMPLICIT_DEF
%1:_(s32), %2:_(s32) = G_UNMERGE_VALUES %0
$w0 = COPY %1
$w1 = COPY %2
...