5ba5211a47
Because we're storing some extra debug-info information in the iterator class, we need to insert new LICM-created stores using such iterators. Switch LICM to storing iterators instead of pointers when it promotes variables in loops, add a test for the desired behaviour, and enable RemoveDIs instrumentation on a variety of other LICM tests for good measure. (This would appear to be the only pass in LLVM that needs to store iterators on the heap).
56 lines
2.2 KiB
LLVM
56 lines
2.2 KiB
LLVM
; RUN: opt < %s -strip-debug -passes=licm -S | FileCheck %s
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; RUN: opt < %s -passes=licm -verify-memoryssa -S | FileCheck %s
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; RUN: opt < %s -passes=licm -verify-memoryssa -S --try-experimental-debuginfo-iterators | 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, ptr @a, align 4
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; CHECK-NEXT: [[_TMP3:%.*]] = load i32, ptr @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 ptr @c, metadata !10, metadata !DIExpression(DW_OP_deref)), !dbg !12
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%_tmp2 = load i32, ptr @a, align 4
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%_tmp3 = load i32, ptr @b, align 4
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%_tmp4 = sdiv i32 %_tmp2, %_tmp3
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store i32 %_tmp4, ptr @c, align 4
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%_tmp6 = load volatile i32, ptr @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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