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86 lines
3.4 KiB
YAML
86 lines
3.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -debugify-and-strip-all-safe -mtriple aarch64 -O0 -run-pass=aarch64-prelegalizer-combiner --aarch64prelegalizercombiner-only-enable-rule="load_or_combine" -global-isel -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=NOT_STRICT
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# RUN: llc -debugify-and-strip-all-safe -mattr=+strict-align -mtriple aarch64 -O0 -run-pass=aarch64-prelegalizer-combiner --aarch64prelegalizercombiner-only-enable-rule="load_or_combine" -global-isel -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=STRICT
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# REQUIRES: asserts
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# Check that the load-or combine respects alignment requirements.
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...
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---
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name: misaligned
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; NOT_STRICT-LABEL: name: misaligned
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; NOT_STRICT: liveins: $x0, $x1
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; NOT_STRICT-NEXT: {{ $}}
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; NOT_STRICT-NEXT: %ptr:_(p0) = COPY $x1
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; NOT_STRICT-NEXT: %full_load:_(s32) = G_LOAD %ptr(p0) :: (load (s32), align 2)
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; NOT_STRICT-NEXT: $w1 = COPY %full_load(s32)
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; NOT_STRICT-NEXT: RET_ReallyLR implicit $w1
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;
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; STRICT-LABEL: name: misaligned
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; STRICT: liveins: $x0, $x1
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; STRICT-NEXT: {{ $}}
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; STRICT-NEXT: %cst_1:_(s64) = G_CONSTANT i64 1
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; STRICT-NEXT: %cst_16:_(s32) = G_CONSTANT i32 16
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; STRICT-NEXT: %ptr:_(p0) = COPY $x1
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; STRICT-NEXT: %ptr_elt_1:_(p0) = G_PTR_ADD %ptr, %cst_1(s64)
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; STRICT-NEXT: %low_half:_(s32) = G_ZEXTLOAD %ptr(p0) :: (load (s16))
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; STRICT-NEXT: %elt1:_(s32) = G_ZEXTLOAD %ptr_elt_1(p0) :: (load (s16))
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; STRICT-NEXT: %high_half:_(s32) = nuw G_SHL %elt1, %cst_16(s32)
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; STRICT-NEXT: %full_load:_(s32) = G_OR %low_half, %high_half
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; STRICT-NEXT: $w1 = COPY %full_load(s32)
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; STRICT-NEXT: RET_ReallyLR implicit $w1
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%cst_1:_(s64) = G_CONSTANT i64 1
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%cst_16:_(s32) = G_CONSTANT i32 16
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%ptr:_(p0) = COPY $x1
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%ptr_elt_1:_(p0) = G_PTR_ADD %ptr, %cst_1(s64)
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%low_half:_(s32) = G_ZEXTLOAD %ptr(p0) :: (load (s16), align 2)
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%elt1:_(s32) = G_ZEXTLOAD %ptr_elt_1(p0) :: (load (s16), align 2)
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%high_half:_(s32) = nuw G_SHL %elt1, %cst_16(s32)
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%full_load:_(s32) = G_OR %low_half, %high_half
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$w1 = COPY %full_load(s32)
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RET_ReallyLR implicit $w1
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...
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---
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name: aligned
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; NOT_STRICT-LABEL: name: aligned
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; NOT_STRICT: liveins: $x0, $x1
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; NOT_STRICT-NEXT: {{ $}}
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; NOT_STRICT-NEXT: %ptr:_(p0) = COPY $x1
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; NOT_STRICT-NEXT: %full_load:_(s32) = G_LOAD %ptr(p0) :: (load (s32))
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; NOT_STRICT-NEXT: $w1 = COPY %full_load(s32)
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; NOT_STRICT-NEXT: RET_ReallyLR implicit $w1
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;
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; STRICT-LABEL: name: aligned
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; STRICT: liveins: $x0, $x1
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; STRICT-NEXT: {{ $}}
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; STRICT-NEXT: %ptr:_(p0) = COPY $x1
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; STRICT-NEXT: %full_load:_(s32) = G_LOAD %ptr(p0) :: (load (s32))
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; STRICT-NEXT: $w1 = COPY %full_load(s32)
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; STRICT-NEXT: RET_ReallyLR implicit $w1
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%cst_1:_(s64) = G_CONSTANT i64 1
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%cst_16:_(s32) = G_CONSTANT i32 16
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%ptr:_(p0) = COPY $x1
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%ptr_elt_1:_(p0) = G_PTR_ADD %ptr, %cst_1(s64)
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%low_half:_(s32) = G_ZEXTLOAD %ptr(p0) :: (load (s16), align 4)
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%elt1:_(s32) = G_ZEXTLOAD %ptr_elt_1(p0) :: (load (s16), align 4)
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%high_half:_(s32) = nuw G_SHL %elt1, %cst_16(s32)
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%full_load:_(s32) = G_OR %low_half, %high_half
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$w1 = COPY %full_load(s32)
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RET_ReallyLR implicit $w1
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