diff options
Diffstat (limited to 'llvm/test/Transforms/LICM/hoist-debuginvariant.ll')
| -rw-r--r-- | llvm/test/Transforms/LICM/hoist-debuginvariant.ll | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LICM/hoist-debuginvariant.ll b/llvm/test/Transforms/LICM/hoist-debuginvariant.ll new file mode 100644 index 00000000000..6f851fb10b8 --- /dev/null +++ b/llvm/test/Transforms/LICM/hoist-debuginvariant.ll @@ -0,0 +1,55 @@ +; RUN: opt < %s -licm -S | FileCheck %s +; RUN: opt < %s -strip-debug -licm -S | FileCheck %s +; RUN: opt < %s -licm -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +; Verify that the sdiv is hoisted out of the loop +; even in the presence of a preceding debug intrinsic. + +@a = global i32 0 +@b = global i32 0 +@c = global i32 0 + +define void @fn1() !dbg !6 { +; CHECK-LABEL: @fn1( +; CHECK-NEXT: [[_TMP2:%.*]] = load i32, i32* @a, align 4 +; CHECK-NEXT: [[_TMP3:%.*]] = load i32, i32* @b, align 4 +; CHECK-NEXT: [[_TMP4:%.*]] = sdiv i32 [[_TMP2]], [[_TMP3]] +; CHECK-NEXT: br label [[BB3:%.*]] + + br label %bb3 + +bb3: ; preds = %bb3, %0 + call void @llvm.dbg.value(metadata i32* @c, metadata !10, metadata !DIExpression(DW_OP_deref)), !dbg !12 + %_tmp2 = load i32, i32* @a, align 4 + %_tmp3 = load i32, i32* @b, align 4 + %_tmp4 = sdiv i32 %_tmp2, %_tmp3 + store i32 %_tmp4, i32* @c, align 4 + %_tmp6 = load volatile i32, i32* @c, align 4 + br label %bb3 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.value(metadata, metadata, metadata) #0 + +attributes #0 = { nounwind readnone speculatable } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4} +!llvm.ident = !{!5} + +!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "foo", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2) +!1 = !DIFile(filename: "foo.c", directory: "/") +!2 = !{} +!3 = !{i32 2, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{!"foo"} +!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) +!7 = !DISubroutineType(types: !8) +!8 = !{!9} +!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!10 = !DILocalVariable(name: "f", scope: !11, line: 5, type: !9) +!11 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 12) +!12 = !DILocation(line: 5, column: 9, scope: !11) |
