56 lines
2.1 KiB
LLVM
56 lines
2.1 KiB
LLVM
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; RUN: opt < %s -licm -S | FileCheck %s
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; RUN: opt < %s -strip-debug -licm -S | FileCheck %s
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; RUN: opt < %s -licm -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Verify that the sdiv is hoisted out of the loop
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; even in the presence of a preceding debug intrinsic.
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@a = global i32 0
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@b = global i32 0
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@c = global i32 0
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define void @fn1() !dbg !6 {
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; CHECK-LABEL: @fn1(
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; CHECK-NEXT: [[_TMP2:%.*]] = load i32, i32* @a, align 4
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; CHECK-NEXT: [[_TMP3:%.*]] = load i32, i32* @b, align 4
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; CHECK-NEXT: [[_TMP4:%.*]] = sdiv i32 [[_TMP2]], [[_TMP3]]
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; CHECK-NEXT: br label [[BB3:%.*]]
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br label %bb3
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bb3: ; preds = %bb3, %0
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call void @llvm.dbg.value(metadata i32* @c, metadata !10, metadata !DIExpression(DW_OP_deref)), !dbg !12
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%_tmp2 = load i32, i32* @a, align 4
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%_tmp3 = load i32, i32* @b, align 4
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%_tmp4 = sdiv i32 %_tmp2, %_tmp3
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store i32 %_tmp4, i32* @c, align 4
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%_tmp6 = load volatile i32, i32* @c, align 4
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br label %bb3
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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) #0
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attributes #0 = { nounwind readnone speculatable }
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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: "foo", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2)
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!1 = !DIFile(filename: "foo.c", directory: "/")
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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 = !{!"foo"}
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!6 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9}
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DILocalVariable(name: "f", scope: !11, line: 5, type: !9)
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!11 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 12)
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!12 = !DILocation(line: 5, column: 9, scope: !11)
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