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80 lines
3.0 KiB
80 lines
3.0 KiB
; RUN: llc -start-after=codegenprepare -stop-before=finalize-isel < %s -o - | FileCheck %s
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; Test that stack frame dbg.values are lowered to DBG_VALUEs, in blocks that
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; are local to the alloca, and elsewhere. Differs from dbg-value-frame-index.ll
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; because this test does not result in the frame-index being in a vreg,
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; instead it's exclusively referred to by memory operands of instructions.
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;
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; Additionally test that we don't re-order with constant values -- both are
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; independent of the order the instructions get lowered, but should not
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; interleave.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-unknown"
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declare void @dud()
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; CHECK: [[BARVAR:![0-9]+]] = !DILocalVariable(name: "bar",
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define i32 @foo() !dbg !6 {
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; CHECK-LABEL: body
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; CHECK: DBG_VALUE 0, $noreg, [[BARVAR]]
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; CHECK-NEXT: MOV32mi %[[STACKLOC:[a-zA-Z0-9\.]+]], 1, $noreg
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; CHECK-NEXT: DBG_VALUE %[[STACKLOC]], $noreg, [[BARVAR]]
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%p1 = alloca i32
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call void @llvm.dbg.value(metadata i32 *null, metadata !17, metadata !DIExpression()), !dbg !18
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store i32 0, i32 *%p1
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call void @llvm.dbg.value(metadata i32 *%p1, metadata !17, metadata !DIExpression()), !dbg !18
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br label %foo
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foo:
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; CHECK-LABEL: bb.1.foo
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; CHECK: DBG_VALUE %[[STACKLOC]], $noreg, [[BARVAR]]
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call void @dud()
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call void @llvm.dbg.value(metadata i32 *%p1, metadata !17, metadata !DIExpression()), !dbg !18
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br label %bar
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bar:
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; CHECK-LABEL: bb.2.bar
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; CHECK: DBG_VALUE %[[STACKLOC]], $noreg, [[BARVAR]]
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; CHECK-NEXT: ADJCALLSTACKDOWN
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; CHECK-NEXT: CALL
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; CHECK-NEXT: ADJCALLSTACKUP
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; CHECK-NEXT: DBG_VALUE 0, $noreg, [[BARVAR]]
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call void @llvm.dbg.value(metadata i32 *%p1, metadata !17, metadata !DIExpression()), !dbg !18
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call void @dud()
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call void @llvm.dbg.value(metadata i32 *null, metadata !17, metadata !DIExpression()), !dbg !18
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%loaded = load i32, i32 *%p1
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ret i32 %loaded, !dbg !19
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #6
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2)
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!1 = !DIFile(filename: "a.c", directory: "b")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!""}
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 13, type: !7, isLocal: false, isDefinition: true, scopeLine: 14, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!140}
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!140 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!15 = !{!16}
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!16 = !DISubrange(count: 5)
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!17 = !DILocalVariable(name: "bar", scope: !6, line: 13, type: !140)
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!18 = !DILocation(line: 13, column: 23, scope: !6)
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!19 = !DILocation(line: 15, column: 5, scope: !6)
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!20 = !DILocation(line: 16, column: 1, scope: !6)
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!21 = !DILocalVariable(name: "baz", scope: !6, line: 13, type: !140)
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