derek.holloway
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110 lines
3.2 KiB
YAML
110 lines
3.2 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple x86_64 -run-pass=x86-prelegalizer-combiner %s -o - | FileCheck %s
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# RUN: llc -mtriple x86_64 -passes=x86-prelegalizer-combiner-pass %s -o - | FileCheck %s
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---
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name: dont_fold_sub
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $eax
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; Not an identity, no folding.
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; CHECK-LABEL: name: dont_fold_sub
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; CHECK: liveins: $eax
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %x:_(s32) = COPY $eax
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
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; CHECK-NEXT: %op:_(s32) = G_ADD %x, [[C]]
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; CHECK-NEXT: $eax = COPY %op(s32)
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; CHECK-NEXT: RET implicit $eax
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%x:_(s32) = COPY $eax
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%cst:_(s32) = G_CONSTANT i32 1
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%op:_(s32) = G_SUB %x(s32), %cst
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$eax = COPY %op(s32)
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RET implicit $eax
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...
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---
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name: sub_to_add
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $eax
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; CHECK-LABEL: name: sub_to_add
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; CHECK: liveins: $eax
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %x:_(s32) = COPY $eax
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
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; CHECK-NEXT: %op:_(s32) = G_ADD %x, [[C]]
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; CHECK-NEXT: $eax = COPY %op(s32)
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; CHECK-NEXT: RET implicit $eax
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%x:_(s32) = COPY $eax
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%cst:_(s32) = G_CONSTANT i32 1
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%op:_(s32) = G_SUB %x(s32), %cst
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$eax = COPY %op(s32)
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RET implicit $eax
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...
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---
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name: sub_to_add_nuw
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $eax
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; CHECK-LABEL: name: sub_to_add_nuw
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; CHECK: liveins: $eax
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %x:_(s32) = COPY $eax
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
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; CHECK-NEXT: %op:_(s32) = G_ADD %x, [[C]]
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; CHECK-NEXT: $eax = COPY %op(s32)
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; CHECK-NEXT: RET implicit $eax
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%x:_(s32) = COPY $eax
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%cst:_(s32) = G_CONSTANT i32 1
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%op:_(s32) = nuw G_SUB %x(s32), %cst
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$eax = COPY %op(s32)
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RET implicit $eax
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...
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---
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name: sub_to_add_nsw_128
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body: |
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bb.0:
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liveins: $eax, $ebx
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; CHECK-LABEL: name: sub_to_add_nsw_128
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; CHECK: liveins: $eax, $ebx
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %a:_(s32) = COPY $eax
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; CHECK-NEXT: %b:_(s8) = G_TRUNC %a(s32)
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; CHECK-NEXT: %c:_(s8) = G_CONSTANT i8 -128
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; CHECK-NEXT: %add:_(s8) = G_ADD %b, %c
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; CHECK-NEXT: %d:_(s32) = G_ZEXT %add(s8)
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; CHECK-NEXT: $eax = COPY %d(s32)
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; CHECK-NEXT: RET implicit $rax
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%a:_(s32) = COPY $eax
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%b:_(s8) = G_TRUNC %a
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%c:_(s8) = G_CONSTANT i8 -128
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%add:_(s8) = nsw nuw G_SUB %b, %c
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%d:_(s32) = G_ZEXT %add
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$eax = COPY %d
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RET implicit $rax
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...
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---
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name: sub_to_add_nsw_intmin
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body: |
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bb.0:
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liveins: $eax, $ebx
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; CHECK-LABEL: name: sub_to_add_nsw_intmin
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; CHECK: liveins: $eax, $ebx
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %a:_(s32) = COPY $eax
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; CHECK-NEXT: %c:_(s32) = G_CONSTANT i32 -2147483648
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; CHECK-NEXT: %add:_(s32) = G_ADD %a, %c
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; CHECK-NEXT: $eax = COPY %add(s32)
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; CHECK-NEXT: RET implicit $rax
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%a:_(s32) = COPY $eax
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%c:_(s32) = G_CONSTANT i32 -2147483648
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%add:_(s32) = nsw nuw G_SUB %a, %c
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$eax = COPY %add
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RET implicit $rax
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...
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