# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -mtriple=i386-unknown-linux-gnu -verify-coalescing -run-pass=register-coalescer -o - %s | FileCheck %s
# Make sure no verifier error is produced from coalescing the identity
# copy in bb.3 with live out implicit_defs. The value is live out of
# the block, and the incoming value is a phi def.
---
name: pr38795_verifier_error_reduced_1
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: pr38795_verifier_error_reduced_1
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: JCC_1 %bb.3, 4, implicit undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JCC_1 %bb.5, 4, implicit undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY [[MOV32r0_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.1
bb.0:
liveins: $eax
%0:gr32 = COPY $eax
bb.1:
%1:gr32 = IMPLICIT_DEF
JCC_1 %bb.3, 4, implicit undef $eflags
bb.2:
%0:gr32 = MOV32r0 implicit-def dead $eflags
bb.3:
%0:gr32 = COPY %0
JCC_1 %bb.5, 4, implicit undef $eflags
bb.4:
%1:gr32 = COPY %0
bb.5:
%0:gr32 = COPY killed %1
JMP_1 %bb.1
...
# Check for "Instruction ending live segment doesn't read the
# register" verifier error after coalescing
# This still failed with a similar error after a preliminary fix was
# attempted for pr38795_verifier_error_reduced_1
---
name: pr38795_verifier_error_reduced_2
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: pr38795_verifier_error_reduced_2
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: JCC_1 %bb.3, 4, implicit killed undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.9(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JMP_1 %bb.9
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JCC_1 %bb.5, 5, implicit killed undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.6(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags
; CHECK-NEXT: JMP_1 %bb.6
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
; CHECK-NEXT: successors: %bb.9(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: JMP_1 %bb.9
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.6:
; CHECK-NEXT: successors: %bb.8(0x40000000), %bb.7(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JCC_1 %bb.8, 4, implicit killed undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.7:
; CHECK-NEXT: successors: %bb.8(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY [[DEF1]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.8:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.9:
; CHECK-NEXT: successors: %bb.6(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JMP_1 %bb.6
bb.0:
%0:gr32 = IMPLICIT_DEF
bb.1:
%1:gr32 = IMPLICIT_DEF
JCC_1 %bb.3, 4, implicit killed undef $eflags
bb.2:
%2:gr32 = COPY killed %0
JMP_1 %bb.9
bb.3:
JCC_1 %bb.5, 5, implicit killed undef $eflags
bb.4:
%3:gr32 = MOV32r0 implicit-def dead $eflags
JMP_1 %bb.6
bb.5:
%2:gr32 = IMPLICIT_DEF
JMP_1 %bb.9
bb.6:
JCC_1 %bb.8, 4, implicit killed undef $eflags
bb.7:
%1:gr32 = COPY killed %3
bb.8:
%4:gr32 = COPY killed %1
%0:gr32 = COPY killed %4
JMP_1 %bb.1
bb.9:
%3:gr32 = COPY killed %2
JMP_1 %bb.6
...
# Still failed after patch for first 2 failures
---
name: pr38795_verifier_error_reduced_3
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: pr38795_verifier_error_reduced_3
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: JCC_1 %bb.5, 4, implicit killed undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.5(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF2:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY [[DEF]]
; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def dead $eflags
; CHECK-NEXT: JCC_1 %bb.4, 5, implicit killed undef $eflags
; CHECK-NEXT: JMP_1 %bb.5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: TEST32rr undef [[COPY]], [[COPY]], implicit-def $eflags
; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: JCC_1 %bb.4, 4, implicit killed undef $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY [[MOV32r0_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY [[COPY1]]
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JMP_1 %bb.2
bb.0:
%0:gr32 = IMPLICIT_DEF
%1:gr32 = IMPLICIT_DEF
JCC_1 %bb.5, 4, implicit killed undef $eflags
bb.1:
%2:gr32 = IMPLICIT_DEF
%1:gr32 = COPY killed %0
%0:gr32 = MOV32r0 implicit-def dead $eflags
JCC_1 %bb.4, 5, implicit killed undef $eflags
JMP_1 %bb.5
bb.2:
TEST32rr undef %1, %1, implicit-def $eflags
%2:gr32 = IMPLICIT_DEF
JCC_1 %bb.4, 4, implicit killed undef $eflags
bb.3:
%2:gr32 = COPY killed %0
bb.4:
%0:gr32 = COPY killed %2
JMP_1 %bb.1
bb.5:
JMP_1 %bb.2
...
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