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