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TheRock/compiler/amd-llvm/llvm/test/CodeGen/PowerPC/subreg-coalescer.mir
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple powerpc64le-unknown-linux-gnu -mcpu=pwr8 %s \
# RUN: -verify-coalescing --run-pass=register-coalescer -o - | FileCheck %s
# Check that the register coalescer correctly handles merging live ranges over
# SUBREG_TO_REG on PowerPC. The -verify-coalescing option will give an error if
# this is incorrect.
---
name: check_subregs
alignment: 16
tracksRegLiveness: true
body: |
bb.0:
liveins: $x3
; CHECK-LABEL: name: check_subregs
; CHECK: liveins: $x3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY $x3
; CHECK-NEXT: [[LFSUX:%[0-9]+]]:f8rc, dead [[LFSUX1:%[0-9]+]]:g8rc_and_g8rc_nox0 = LFSUX [[COPY]], [[COPY]]
; CHECK-NEXT: undef [[FRSP:%[0-9]+]].sub_64:vslrc = FRSP [[LFSUX]], implicit $rm
; CHECK-NEXT: [[XVCVDPSP:%[0-9]+]]:vrrc = XVCVDPSP [[FRSP]], implicit $rm
; CHECK-NEXT: $v2 = COPY [[XVCVDPSP]]
; CHECK-NEXT: BLR8 implicit $lr8, implicit $rm, implicit $v2
%0:g8rc_and_g8rc_nox0 = COPY $x3
%1:f8rc, %2:g8rc_and_g8rc_nox0 = LFSUX %0, %0
%3:f4rc = FRSP killed %1, implicit $rm
%4:vslrc = SUBREG_TO_REG %3, %subreg.sub_64
%5:vrrc = XVCVDPSP killed %4, implicit $rm
$v2 = COPY %5
BLR8 implicit $lr8, implicit $rm, implicit $v2
...