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TheRock/compiler/amd-llvm/llvm/test/CodeGen/Thumb/opt-phis.mir
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

40 lines
1.1 KiB
YAML

# RUN: llc -mtriple thumbv6m-none-eabi -run-pass=opt-phis -verify-machineinstrs -o - %s | FileCheck %s
# RUN: llc -mtriple thumbv6m-none-eabi -passes=opt-phis -verify-machineinstrs -o - %s | FileCheck %s
--- |
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv6m-arm-none-eabi"
define i32 @funca() { unreachable }
...
---
name: funca
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
%0:tgpr, dead $cpsr = tMOVi8 255, 14, $noreg
%1:tgpr, dead $cpsr = tMOVi8 128, 14, $noreg
tCMPi8 %0, 0, 14, $noreg, implicit-def $cpsr
tBcc %bb.3, 1, $cpsr
bb.2:
successors: %bb.3(0x80000000)
bb.3:
successors: %bb.0(0x80000000)
%2:tgpr = PHI %0, %bb.2, %0, %bb.0
%3:tgpr, $cpsr = tSUBrr %1, killed %2, 14, $noreg
%4:tgpr, $cpsr = tADDrr killed %3, killed %0, 14, $noreg
tB %bb.0, 14, $noreg
# Make sure the kill flags are not incorrect
# CHECK-LABEL: name: funca
# CHECK-NOT: PHI
# CHECK: tSUBrr %1, %0
# CHECK: tADDrr killed %3, %0
...