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|
# RUN: llc -run-pass wasm-reg-stackify %s -o - | FileCheck %s
--- |
target triple = "wasm32-unknown-unknown"
declare void @use(i32)
define void @sink_same_bb() {
unreachable
}
define void @clone_same_bb() {
unreachable
}
define void @clone_different_bb_0() {
unreachable
}
define void @clone_different_bb_1() {
unreachable
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3, !4}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
!1 = !DIFile(filename: "test.c", directory: "")
!2 = !{i32 7, !"Dwarf Version", i32 5}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = !{i32 1, !"wchar_size", i32 4}
!6 = distinct !DISubprogram(name: "sink_same_bb", scope: !1, file: !1, line: 1, type: !7, scopeLine: 1, unit: !0)
!7 = !DISubroutineType(types: !8)
!8 = !{null}
...
---
# Sinking within the same BB preserves the debug location.
# CHECK-LABEL: name: sink_same_bb
name: sink_same_bb
liveins:
- { reg: '$arguments' }
tracksRegLiveness: true
body: |
bb.0:
liveins: $arguments
%0:i32 = CONST_I32 1, implicit-def $arguments, debug-location !DILocation(line:10, scope:!6)
NOP implicit-def $arguments
CALL @use, %0:i32, implicit-def $arguments
RETURN implicit-def $arguments
; CHECK: %0:i32 = CONST_I32 1, {{.*}}, debug-location !DILocation(line: 10
; CHECK-NEXT: CALL @use
...
---
# Cloning within the same BB preserves the debug location.
# CHECK-LABEL: name: clone_same_bb
name: clone_same_bb
liveins:
- { reg: '$arguments' }
tracksRegLiveness: true
body: |
bb.0:
liveins: $arguments
%0:i32 = CONST_I32 1, implicit-def $arguments, debug-location !DILocation(line:10, scope:!6)
NOP implicit-def $arguments
CALL @use, %0:i32, implicit-def $arguments
CALL @use, %0:i32, implicit-def $arguments
RETURN implicit-def $arguments
; CHECK: CALL @use
; CHECK-NEXT: %1:i32 = CONST_I32 1, {{.*}}, debug-location !DILocation(line: 10
; CHECK-NEXT: CALL @use
...
---
# Cloning to a different BB preserves the debug location in this case because
# the destination BB has an instruction that has the same debug location
# (test.c:10).
# CHECK-LABEL: name: clone_different_bb_0
name: clone_different_bb_0
liveins:
- { reg: '$arguments' }
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.1
liveins: $arguments
%0:i32 = CONST_I32 1, implicit-def $arguments, debug-location !DILocation(line:10, scope:!6)
BR %bb.1, implicit-def $arguments
bb.1:
; predecessors: %bb.0
CALL @use, %0:i32, implicit-def $arguments, debug-location !DILocation(line:10, scope:!6)
RETURN implicit-def $arguments
; CHECK: bb.1:
; CHECK: %1:i32 = CONST_I32 1, {{.*}}, debug-location !DILocation(line: 10
; CHECK-NEXT: CALL @use, %1, {{.*}}, debug-location !DILocation(line: 10
...
---
# Cloning to a different BB does NOT preserve the debug location in this case
# because the destination BB doesn't have an instruction that has the same debug
# location (It has test.c:20 but not test.c:10).
# CHECK-LABEL: name: clone_different_bb_1
name: clone_different_bb_1
liveins:
- { reg: '$arguments' }
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.1
liveins: $arguments
%0:i32 = CONST_I32 1, implicit-def $arguments, debug-location !DILocation(line:10, scope:!6)
BR %bb.1, implicit-def $arguments
bb.1:
; predecessors: %bb.0
CALL @use, %0:i32, implicit-def $arguments, debug-location !DILocation(line:20, scope:!6)
RETURN implicit-def $arguments
; CHECK: bb.1:
; CHECK: %1:i32 = CONST_I32 1
; CHECK-NOT: %1:i32 = CONST_I32 1, {{.*}}, debug-location !DILocation(line: 10
; CHECK-NEXT: CALL @use, %1, {{.*}}, debug-location !DILocation(line: 20
...
|
