mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 18:54:02 +01:00
617750cbc9
This reverts commit c0f3dfb9f119bb5f22dd8846f5502b6abaf026d3. Reverted due to an error on the clang-x64-windows-msvc buildbot.
110 lines
4.6 KiB
LLVM
110 lines
4.6 KiB
LLVM
; RUN: opt %s -instcombine -S | FileCheck %s
|
|
|
|
; Test sinking of dbg.values when instcombine sinks associated instructions.
|
|
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
; This GEP is sunk, but can be folded into a DIExpression. Check that it
|
|
; gets folded. The dbg.value should be duplicated in the block its sunk
|
|
; into, to maximise liveness.
|
|
;
|
|
; CHECK-LABEL: define i32 @foo(i32*
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* %a, metadata !{{[0-9]+}},
|
|
; CHECK-SAME: metadata !DIExpression(DW_OP_plus_uconst, 4, DW_OP_stack_value))
|
|
; CHECK-NEXT: br label %sink1
|
|
|
|
define i32 @foo(i32 *%a) !dbg !7 {
|
|
entry:
|
|
%gep = getelementptr i32, i32 *%a, i32 1
|
|
call void @llvm.dbg.value(metadata i32 *%gep, metadata !16, metadata !12), !dbg !15
|
|
br label %sink1
|
|
|
|
sink1:
|
|
; CHECK-LABEL: sink1:
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* %gep,
|
|
; CHECK-SAME: metadata !{{[0-9]+}}, metadata !DIExpression())
|
|
; CHECK-NEXT: load
|
|
%0 = load i32, i32* %gep, align 4, !dbg !15
|
|
ret i32 %0, !dbg !15
|
|
}
|
|
|
|
; In this example the GEP cannot (yet) be salvaged. Check that not only is the
|
|
; dbg.value sunk, but an undef dbg.value is left to terminate any earlier
|
|
; value range.
|
|
|
|
; CHECK-LABEL: define i32 @bar(
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* undef,
|
|
; CHECK-NEXT: br label %sink2
|
|
|
|
define i32 @bar(i32 *%a, i32 %b) !dbg !70 {
|
|
entry:
|
|
%gep = getelementptr i32, i32 *%a, i32 %b
|
|
call void @llvm.dbg.value(metadata i32* %gep, metadata !73, metadata !12), !dbg !74
|
|
br label %sink2
|
|
|
|
sink2:
|
|
; CHECK-LABEL: sink2:
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* %gep,
|
|
; CHECK-SAME: metadata !{{[0-9]+}}, metadata !DIExpression())
|
|
; CHECK-NEXT: load
|
|
; CHECK-NEXT: ret
|
|
%0 = load i32, i32* %gep
|
|
ret i32 %0
|
|
}
|
|
|
|
; This GEP is sunk, and has multiple debug uses in the same block. Check that
|
|
; only the last use is cloned into the sunk block, and that both of the
|
|
; original dbg.values are salvaged.
|
|
;
|
|
; CHECK-LABEL: define i32 @baz(i32*
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* %a, metadata !{{[0-9]+}},
|
|
; CHECK-SAME: metadata !DIExpression(DW_OP_plus_uconst, 4, DW_OP_stack_value))
|
|
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %a, metadata !{{[0-9]+}},
|
|
; CHECK-SAME: metadata !DIExpression(DW_OP_plus_uconst, 4, DW_OP_plus_uconst, 5, DW_OP_stack_value))
|
|
; CHECK-NEXT: br label %sink1
|
|
|
|
define i32 @baz(i32 *%a) !dbg !80 {
|
|
entry:
|
|
%gep = getelementptr i32, i32 *%a, i32 1
|
|
call void @llvm.dbg.value(metadata i32 *%gep, metadata !83, metadata !12), !dbg !84
|
|
call void @llvm.dbg.value(metadata i32 *%gep, metadata !83, metadata !DIExpression(DW_OP_plus_uconst, 5)), !dbg !85
|
|
br label %sink1
|
|
|
|
sink1:
|
|
; CHECK-LABEL: sink1:
|
|
; CHECK: call void @llvm.dbg.value(metadata i32* %gep,
|
|
; CHECK-SAME: metadata !{{[0-9]+}}, metadata !DIExpression(DW_OP_plus_uconst, 5))
|
|
; CHECK-NEXT: load
|
|
%0 = load i32, i32* %gep, align 4, !dbg !85
|
|
ret i32 %0, !dbg !85
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5}
|
|
!llvm.ident = !{!6}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
|
|
!1 = !DIFile(filename: "a.c", directory: ".")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{i32 1, !"PIC Level", i32 2}
|
|
!6 = !{!"clang"}
|
|
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
|
|
!8 = !DISubroutineType(types: !9)
|
|
!9 = !{!10, !10}
|
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!11 = !DILocalVariable(name: "j", scope: !7, file: !1, line: 2, type: !10)
|
|
!12 = !DIExpression()
|
|
!15 = !DILocation(line: 5, column: 3, scope: !7)
|
|
!16 = !DILocalVariable(name: "h", scope: !7, file: !1, line: 4, type: !10)
|
|
!70 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !71, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
|
|
!71 = !DISubroutineType(types: !72)
|
|
!72 = !{!10, !10, !10}
|
|
!73 = !DILocalVariable(name: "k", scope: !70, file: !1, line: 2, type: !10)
|
|
!74 = !DILocation(line: 5, column: 3, scope: !70)
|
|
!80 = distinct !DISubprogram(name: "baz", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
|
|
!83 = !DILocalVariable(name: "l", scope: !80, file: !1, line: 2, type: !10)
|
|
!84 = !DILocation(line: 5, column: 3, scope: !80)
|
|
!85 = !DILocation(line: 6, column: 3, scope: !80)
|