derek.holloway
7502bf64a4
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50 lines
2.5 KiB
LLVM
50 lines
2.5 KiB
LLVM
; RUN: opt -S -passes=aggressive-instcombine -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
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;; Aggressive instcombine merges the two i8 stores into an i16 store. Check
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;; the debug location and DIAssignID metadata get merged.
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; CHECK: define void @test_i16(i16 %x, ptr %p) !dbg ![[#]] {
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; CHECK-NEXT: store i16 %x, ptr %p, align 1, !dbg ![[DBG:[0-9]+]], !DIAssignID ![[ID:[0-9]+]]
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; CHECK-NEXT: #dbg_assign(i16 %x, ![[#]],
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; CHECK-SAME: !DIExpression(DW_OP_LLVM_convert, 16, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value, DW_OP_LLVM_fragment, 0, 8),
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; CHECK-SAME: ![[ID]], ptr %p, !DIExpression(), ![[#]])
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; CHECK-NEXT: #dbg_assign(i16 %x, ![[#]],
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; CHECK-SAME: !DIExpression(DW_OP_constu, 8, DW_OP_shr, DW_OP_LLVM_convert, 16, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value, DW_OP_LLVM_fragment, 8, 8),
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; CHECK-SAME: ![[ID]], ptr %p, !DIExpression(DW_OP_plus_uconst, 1), ![[#]])
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; CHECK-NEXT: ret void
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; CHECK: ![[DBG]] = !DILocation(line: 0, scope: ![[#]])
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define void @test_i16(i16 %x, ptr %p) !dbg !5 {
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%x.0 = trunc i16 %x to i8
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store i8 %x.0, ptr %p, align 1, !dbg !16, !DIAssignID !17
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#dbg_assign(i8 %x.0, !9, !DIExpression(DW_OP_LLVM_fragment, 0, 8), !17, ptr %p, !DIExpression(), !18)
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%shr.1 = lshr i16 %x, 8
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%x.1 = trunc i16 %shr.1 to i8
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%gep.1 = getelementptr i8, ptr %p, i64 1
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store i8 %x.1, ptr %gep.1, align 1, !dbg !19, !DIAssignID !20
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#dbg_assign(i8 %x.1, !9, !DIExpression(DW_OP_LLVM_fragment, 8, 8), !20, ptr %gep.1, !DIExpression(), !18)
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!2, !3}
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!llvm.module.flags = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "/app/example.ll", directory: "/")
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!2 = !{i32 7}
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!3 = !{i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "test_i16", linkageName: "test_i16", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
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!6 = !DISubroutineType(types: !7)
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!7 = !{}
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!8 = !{!9}
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!9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !10)
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!10 = !DIBasicType(name: "ty16", size: 16, encoding: DW_ATE_unsigned)
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!16 = !DILocation(line: 2, column: 1, scope: !5)
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!17 = distinct !DIAssignID()
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!18 = !DILocation(line: 1, column: 1, scope: !5)
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!19 = !DILocation(line: 6, column: 1, scope: !5)
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!20 = distinct !DIAssignID()
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