9cac4e6d14
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun llvm-svn: 363757
70 lines
3.1 KiB
LLVM
70 lines
3.1 KiB
LLVM
; RUN: llc -stop-after=finalize-isel < %s | FileCheck %s
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;
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; Make sure that when the entry block of IR below is lowered, an instruction
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; that implictly defines $eflags has a same debug location with the icmp
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; instruction, and the branch instructions have a same debug location with the
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; br instruction.
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;
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; CHECK: [[DLOC1:![0-9]+]] = !DILocation(line: 5, column: 9, scope: !{{[0-9]+}})
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; CHECK: [[DLOC2:![0-9]+]] = !DILocation(line: 5, column: 7, scope: !{{[0-9]+}})
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; CHECK-DAG: [[VREG1:%[^ ]+]]:gr32 = COPY $esi
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; CHECK-DAG: [[VREG2:%[^ ]+]]:gr32 = COPY $edi
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; CHECK: SUB32rr [[VREG2]], [[VREG1]], implicit-def $eflags, debug-location [[DLOC1]]
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; CHECK-NEXT: JCC_1{{.*}} 4, implicit $eflags, debug-location [[DLOC2]]
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; CHECK-NEXT: JMP_1{{.*}} debug-location [[DLOC2]]
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind uwtable
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define i32 @foo(i32 %x, i32 %y) !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !11), !dbg !12
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tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !11), !dbg !13
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%cmp = icmp ne i32 %x, %y, !dbg !14
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br i1 %cmp, label %if.then, label %if.else, !dbg !16
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if.then: ; preds = %entry
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%call = tail call i32 (...) @bar() #3, !dbg !17
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br label %return, !dbg !18
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if.else: ; preds = %entry
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%call1 = tail call i32 (...) @baz() #3, !dbg !19
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br label %return, !dbg !20
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return: ; preds = %if.else, %if.then
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%retval.0 = phi i32 [ %call, %if.then ], [ %call1, %if.else ]
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ret i32 %retval.0, !dbg !21
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}
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declare i32 @bar(...)
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declare i32 @baz(...)
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
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!1 = !DIFile(filename: "foo.c", directory: "b/")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !{!9, !10}
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!9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 4, type: !7)
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!10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 4, type: !7)
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!11 = !DIExpression()
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!12 = !DILocation(line: 4, column: 13, scope: !4)
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!13 = !DILocation(line: 4, column: 20, scope: !4)
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!14 = !DILocation(line: 5, column: 9, scope: !15)
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!15 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 7)
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!16 = !DILocation(line: 5, column: 7, scope: !4)
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!17 = !DILocation(line: 6, column: 12, scope: !15)
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!18 = !DILocation(line: 6, column: 5, scope: !15)
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!19 = !DILocation(line: 8, column: 12, scope: !15)
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!20 = !DILocation(line: 8, column: 5, scope: !15)
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!21 = !DILocation(line: 9, column: 1, scope: !4)
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