32 lines
962 B
YAML
32 lines
962 B
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -O0 -mtriple=aarch64-apple-ios -global-isel -start-before=legalizer -stop-after=instruction-select %s -o - | FileCheck %s
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# We run the legalizer to combine the trivial EXTRACT_SEQ pair, leaving %1 and
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# %2 orphaned after instruction-selection (no instructions define or use
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# them). This shouldn't be a problem.
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--- |
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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define void @unused_reg() { ret void }
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---
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name: unused_reg
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0
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; CHECK-LABEL: name: unused_reg
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; CHECK: liveins: $w0
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; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY $w0
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; CHECK: $w0 = COPY [[COPY]]
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%0:gpr(s32) = COPY $w0
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%1:gpr(s64) = G_MERGE_VALUES %0(s32), %0(s32)
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%2:gpr(s32), %3:gpr(s32) = G_UNMERGE_VALUES %1(s64)
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$w0 = COPY %2(s32)
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...
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