40 lines
1.7 KiB
LLVM
40 lines
1.7 KiB
LLVM
; RUN: opt -passes=simplifycfg -S < %s | FileCheck %s
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;
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; Simplified from the following code:
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; int foo() {
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; if(c) { return a; } else { return b; }
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; }
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define i32 @foo(i32 %c, i32 %a, i32 %b) !dbg !4 {
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; CHECK: define i32 @foo({{.*}}) !dbg [[FOO_SUBPROGRAM:![0-9]+]]
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[C:%.*]], 0, !dbg [[DBG_CMP:![0-9]+]]
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; CHECK-NEXT: [[A_B:%.*]] = select i1 [[TOBOOL]], i32 [[A:%.*]], i32 [[B:%.*]]
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; CHECK-NEXT: ret i32 [[A_B]], !dbg [[DBG_RET:![0-9]+]]
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; CHECK: [[DBG_CMP]] = !DILocation(line: 2, column: 1, scope: [[FOO_SUBPROGRAM]])
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; CHECK: [[DBG_RET]] = !DILocation(line: 4, scope: [[FOO_SUBPROGRAM]])
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entry:
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%tobool = icmp ne i32 %c, 0, !dbg !7
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br i1 %tobool, label %cond.true, label %cond.false, !dbg !8
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cond.true: ; preds = %entry
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ret i32 %a, !dbg !9
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cond.false: ; preds = %entry
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ret i32 %b, !dbg !10
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}
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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, producer: "clang version 16.0.0)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
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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 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !6)
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!5 = !DISubroutineType(types: !6)
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!6 = !{}
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!7 = !DILocation(line: 2, column: 1, scope: !4)
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!8 = !DILocation(line: 3, column: 1, scope: !4)
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!9 = !DILocation(line: 4, column: 1, scope: !4)
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!10 = !DILocation(line: 4, column: 2, scope: !4)
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