derek.holloway
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96 lines
3.8 KiB
YAML
96 lines
3.8 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass=register-coalescer -o - %s | FileCheck %s
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# Test used to crash with message:
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# JoinVals::computeAssignment(unsigned int, (anonymous namespace)::JoinVals &): Assertion `Assignments[ValNo] != -1 && "Bad recursion?"' failed.
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# The issue was with processing two operands are parts of the same reg and are
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# used in the same instruction (e.g. inline asm): first is "def early-clobber",
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# while the other is just "def".
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# Register coalescer ran in bad recursion if the early clobbered subreg is
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# second in the following sequence of COPYs.
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---
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name: foo1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0_vgpr1
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; CHECK-LABEL: name: foo1
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; CHECK: liveins: $vgpr0_vgpr1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: INLINEASM &"", attdialect, regdef:VGPR_32, def undef %2.sub0, regdef-ec:VGPR_32, def undef early-clobber %2.sub1
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; CHECK-NEXT: FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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; CHECK-NEXT: S_ENDPGM 0
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INLINEASM &"", attdialect, regdef:VGPR_32, def %0:vgpr_32, regdef-ec:VGPR_32, def early-clobber %1:vgpr_32
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undef %2.sub0:vreg_64 = COPY killed %0
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%2.sub1:vreg_64 = COPY killed %1
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FLAT_STORE_DWORDX2 killed $vgpr0_vgpr1, killed %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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S_ENDPGM 0
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...
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---
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name: foo2
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0_vgpr1
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; CHECK-LABEL: name: foo2
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; CHECK: liveins: $vgpr0_vgpr1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: INLINEASM &"", attdialect, regdef-ec:VGPR_32, def undef early-clobber %2.sub1, regdef:VGPR_32, def undef %2.sub0
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; CHECK-NEXT: FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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; CHECK-NEXT: S_ENDPGM 0
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INLINEASM &"", attdialect, regdef-ec:VGPR_32, def early-clobber %1:vgpr_32, regdef:VGPR_32, def %0:vgpr_32
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undef %2.sub0:vreg_64 = COPY killed %0
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%2.sub1:vreg_64 = COPY killed %1
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FLAT_STORE_DWORDX2 killed $vgpr0_vgpr1, killed %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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S_ENDPGM 0
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...
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---
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name: foo3
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0_vgpr1
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; CHECK-LABEL: name: foo3
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; CHECK: liveins: $vgpr0_vgpr1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: INLINEASM &"", attdialect, regdef:VGPR_32, def undef %2.sub0, regdef-ec:VGPR_32, def undef early-clobber %2.sub1
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; CHECK-NEXT: FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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; CHECK-NEXT: S_ENDPGM 0
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INLINEASM &"", attdialect, regdef:VGPR_32, def %1:vgpr_32, regdef-ec:VGPR_32, def early-clobber %0:vgpr_32
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undef %2.sub0:vreg_64 = COPY killed %1
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%2.sub1:vreg_64 = COPY killed %0
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FLAT_STORE_DWORDX2 killed $vgpr0_vgpr1, killed %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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S_ENDPGM 0
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...
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---
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name: foo4
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0_vgpr1
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; CHECK-LABEL: name: foo4
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; CHECK: liveins: $vgpr0_vgpr1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: INLINEASM &"", attdialect, regdef-ec:VGPR_32, def undef early-clobber %2.sub1, regdef:VGPR_32, def undef %2.sub0
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; CHECK-NEXT: FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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; CHECK-NEXT: S_ENDPGM 0
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INLINEASM &"", attdialect, regdef-ec:VGPR_32, def early-clobber %0:vgpr_32, regdef:VGPR_32, def %1:vgpr_32
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undef %2.sub0:vreg_64 = COPY killed %1
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%2.sub1:vreg_64 = COPY killed %0
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FLAT_STORE_DWORDX2 killed $vgpr0_vgpr1, killed %2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
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S_ENDPGM 0
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...
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