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111 lines
6.4 KiB
YAML
111 lines
6.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_givaluetracking_test_checks.py UTC_ARGS: --version 5
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# RUN: llc -mtriple=amdgcn -passes="print<gisel-value-tracking>" %s -filetype=null 2>&1 | FileCheck %s
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## Check that we don't incorrectly assume known zeroes for and extend of a truncated ptrtoint
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## Test case for https://github.com/llvm/llvm-project/issues/139598
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---
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## We should see 128 unknown bits.
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name: PtrToInt
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body: |
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bb.0:
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; CHECK-LABEL: name: @PtrToInt
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; CHECK-NEXT: %0:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %1:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %2:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %3:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %4:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %5:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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%0:_(s32) = COPY $vgpr0
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%1:_(s32) = COPY $vgpr1
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%2:_(s32) = COPY $vgpr2
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%3:_(s32) = COPY $vgpr3
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%4:_(p8) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32), %3(s32)
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%5:_(s128) = G_PTRTOINT %4(p8)
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...
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---
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## We should see 128 high zeroes followed by 128 unknown bits for extending ptrtoint.
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name: PtrToIntExt
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body: |
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bb.0:
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; CHECK-LABEL: name: @PtrToIntExt
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; CHECK-NEXT: %0:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %1:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %2:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %3:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %4:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %5:_ KnownBits:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:128
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%0:_(s32) = COPY $vgpr0
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%1:_(s32) = COPY $vgpr1
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%2:_(s32) = COPY $vgpr2
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%3:_(s32) = COPY $vgpr3
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%4:_(p8) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32), %3(s32)
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%5:_(s256) = G_PTRTOINT %4(p8)
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...
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---
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## We should see 48 unknown bits for truncating ptrtoint.
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name: PtrToIntTrunc
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body: |
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bb.0:
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; CHECK-LABEL: name: @PtrToIntTrunc
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; CHECK-NEXT: %0:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %1:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %2:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %3:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %4:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %5:_ KnownBits:???????????????????????????????????????????????? SignBits:1
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%0:_(s32) = COPY $vgpr0
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%1:_(s32) = COPY $vgpr1
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%2:_(s32) = COPY $vgpr2
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%3:_(s32) = COPY $vgpr3
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%4:_(p8) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32), %3(s32)
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%5:_(s48) = G_PTRTOINT %4(p8)
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...
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---
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## This is the test for issue 139598: Truncating and then extending the
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## G_PTRTOINT result was filling all bits above the index bitwidth with known
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## zeroes even though the incoming value is completely unknown and G_PTRTOINT.
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## is lowered to a bitwise copy.
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## We should see all zero high bits with 48 unknown bits.
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name: PtrToIntTruncExplicitExt
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body: |
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bb.0:
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; CHECK-LABEL: name: @PtrToIntTruncExplicitExt
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; CHECK-NEXT: %0:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %1:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %2:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %3:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %4:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %5:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %6:_ KnownBits:???????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %7:_ KnownBits:0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000???????????????????????????????????????????????? SignBits:208
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%0:_(s32) = COPY $vgpr0
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%1:_(s32) = COPY $vgpr1
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%2:_(s32) = COPY $vgpr2
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%3:_(s32) = COPY $vgpr3
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%4:_(p8) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32), %3(s32)
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%5:_(s128) = G_PTRTOINT %4(p8)
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%6:_(s48) = G_TRUNC %5(s128)
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%7:_(s256) = G_ZEXT %6(s48)
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...
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---
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## Same test again but this time have the G_PTRTOINT do the truncation.
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## We should see all zero high bits with 48 unknown bits.
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name: PtrToIntTruncImplicitExt
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body: |
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bb.0:
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; CHECK-LABEL: name: @PtrToIntTruncImplicitExt
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; CHECK-NEXT: %0:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %1:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %2:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %3:_ KnownBits:???????????????????????????????? SignBits:1
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; CHECK-NEXT: %4:_ KnownBits:???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %5:_ KnownBits:???????????????????????????????????????????????? SignBits:1
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; CHECK-NEXT: %6:_ KnownBits:0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000???????????????????????????????????????????????? SignBits:208
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%0:_(s32) = COPY $vgpr0
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%1:_(s32) = COPY $vgpr1
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%2:_(s32) = COPY $vgpr2
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%3:_(s32) = COPY $vgpr3
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%4:_(p8) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32), %3(s32)
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%5:_(s48) = G_PTRTOINT %4(p8)
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%6:_(s256) = G_ZEXT %5(s48)
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...
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