e4b4a939f8
If there's an implicit-def of a super register, the propagation
must preserve this implicit-def. Knowing how and when to do this
may require target specific knowledge so just disable it for now.
Prior to 2def1c4, we checked that the copy had explicit 2 operands
when that was removed we started allowing implicit operands through.
This patch adds a check for implicit operands, but still allows
extra explicit operands which was the goal of 2def1c4.
Fixes #131478.
22 lines
724 B
YAML
22 lines
724 B
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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# RUN: llc %s -mtriple=s390x-unknown-linux-gnu -run-pass=machine-cp -verify-machineinstrs -o - | FileCheck %s
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---
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name: t
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tracksRegLiveness: true
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noPhis: true
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isSSA: false
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noVRegs: true
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hasFakeUses: false
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tracksDebugUserValues: true
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body: |
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bb.0:
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; CHECK-LABEL: name: t
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; CHECK: renamable $r14d = LLILL 0
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; CHECK-NEXT: renamable $r12d = COPY killed renamable $r14d, implicit-def $r12q
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; CHECK-NEXT: Return implicit $r12q
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renamable $r14d = LLILL 0
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renamable $r12d = COPY killed renamable $r14d, implicit-def $r12q
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Return implicit $r12q
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...
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