0a822f82de
Corrects the erroneous assumption that CR-logical operation's operands are always defined by a subreg copy. Fixes https://github.com/llvm/llvm-project/issues/141643 Patch by Nemanja Ivanovic
67 lines
2.4 KiB
YAML
67 lines
2.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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# RUN: llc -mtriple=powerpc64-unknown-linux-gnu -run-pass=ppc-reduce-cr-ops \
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# RUN: -verify-machineinstrs -o - %s | FileCheck %s
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---
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name: subreg_folding_regression
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tracksRegLiveness: true
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isSSA: true
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body: |
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; CHECK-LABEL: name: subreg_folding_regression
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x80000000)
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; CHECK-NEXT: liveins: $x3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY $x3
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; CHECK-NEXT: [[LD:%[0-9]+]]:g8rc = LD 0, [[COPY]] :: (load (s64))
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: successors: %bb.2(0x20000000), %bb.3(0x60000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[PHI:%[0-9]+]]:g8rc_and_g8rc_nox0 = PHI [[LD]], %bb.0, %3, %bb.3, %4, %bb.2
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; CHECK-NEXT: [[LBZ:%[0-9]+]]:gprc = LBZ 0, [[PHI]] :: (load (s8))
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; CHECK-NEXT: [[CMPWI:%[0-9]+]]:crrc = CMPWI killed [[LBZ]], 0
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; CHECK-NEXT: [[ADDI8_:%[0-9]+]]:g8rc = nuw ADDI8 [[PHI]], 1
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; CHECK-NEXT: STD [[ADDI8_]], 0, [[COPY]] :: (store (s64))
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; CHECK-NEXT: [[LBZ1:%[0-9]+]]:gprc = LBZ 1, [[PHI]] :: (load (s8))
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; CHECK-NEXT: BCn [[CMPWI]].sub_lt, %bb.2
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; CHECK-NEXT: B %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.3:
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; CHECK-NEXT: successors: %bb.1(0x55555555), %bb.2(0x2aaaaaab)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[CMPWI1:%[0-9]+]]:crrc = CMPWI killed [[LBZ1]], 0
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; CHECK-NEXT: BC killed [[CMPWI1]].sub_eq, %bb.1
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; CHECK-NEXT: B %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: successors: %bb.1(0x80000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[ADDI8_1:%[0-9]+]]:g8rc = nuw ADDI8 [[PHI]], 2
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; CHECK-NEXT: STD [[ADDI8_1]], 0, [[COPY]] :: (store (s64))
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; CHECK-NEXT: B %bb.1
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bb.0:
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liveins: $x3
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%0:g8rc_and_g8rc_nox0 = COPY $x3
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%1:g8rc = LD 0, %0 :: (load (s64))
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bb.1:
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%2:g8rc_and_g8rc_nox0 = PHI %1, %bb.0, %3, %bb.1, %4, %bb.2
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%5:gprc = LBZ 0, %2 :: (load (s8))
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%6:crrc = CMPWI killed %5, 0
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%3:g8rc = nuw ADDI8 %2, 1
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STD %3, 0, %0 :: (store (s64))
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%7:gprc = LBZ 1, %2 :: (load (s8))
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%8:crrc = CMPWI killed %7, 0
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%9:crbitrc = CRAND %8.sub_eq, %6.sub_lt
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BC killed %9, %bb.1
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B %bb.2
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bb.2:
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%4:g8rc = nuw ADDI8 %2, 2
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STD %4, 0, %0 :: (store (s64))
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B %bb.1
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...
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