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; RUN: opt -S %s -early-cse | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
@a = global i8 25 , align 1 , !dbg !0
define signext i16 @b ( ) !dbg !12 {
entry:
call void @llvm.dbg.value ( metadata i16 23680 , metadata !17 , metadata !DIExpression ( ) ) , !dbg !18
%0 = load i8 , i8 * @a , align 1 , !dbg !19 , !tbaa !20
%conv = sext i8 %0 to i16 , !dbg !19
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; CHECK: call void @llvm.dbg.value(metadata i8 %0, metadata !17, metadata !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_signed, DW_OP_LLVM_convert, 16, DW_ATE_signed, DW_OP_stack_value)), !dbg !18
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; CHECK-NEXT: call i32 (...) @optimize_me_not()
call void @llvm.dbg.value ( metadata i16 %conv , metadata !17 , metadata !DIExpression ( ) ) , !dbg !18
%call = call i32 ( . . . ) @optimize_me_not ( ) , !dbg !23
%1 = load i8 , i8 * @a , align 1 , !dbg !24 , !tbaa !20
%conv1 = sext i8 %1 to i16 , !dbg !24
ret i16 %conv1 , !dbg !25
}
declare void @llvm.dbg.declare ( metadata , metadata , metadata )
declare i32 @optimize_me_not ( . . . )
define i32 @main ( ) !dbg !26 {
entry:
%call = call signext i16 @b ( ) , !dbg !30
ret i32 0 , !dbg !31
}
declare void @llvm.dbg.value ( metadata , metadata , metadata )
!llvm.dbg.cu = ! { !2 }
!llvm.module.flags = ! { !7 , !8 , !9 , !10 }
!llvm.ident = ! { !11 }
!0 = !DIGlobalVariableExpression ( var: !1 , expr: !DIExpression ( ) )
!1 = distinct !DIGlobalVariable ( name: "a" , scope: !2 , file: !3 , line: 1 , type: !6 , isLocal: false , isDefinition: true )
!2 = distinct !DICompileUnit ( language: D W _ L A N G _ C 99 , file: !3 , producer: "clang version 8.0.0 " , isOptimized: true , runtimeVersion: 0 , emissionKind: F u l l D e b u g , enums: !4 , globals: !5 , nameTableKind: G N U )
!3 = !DIFile ( filename: "patatino.c" , directory: "/Users/davide/llvm-monorepo/llvm-mono/build/bin" )
!4 = ! { }
!5 = ! { !0 }
!6 = !DIBasicType ( name: "char" , size: 8 , encoding: D W _ A T E _ s i g n e d _ c h a r )
!7 = ! { i32 2 , !"Dwarf Version" , i32 4 }
!8 = ! { i32 2 , !"Debug Info Version" , i32 3 }
!9 = ! { i32 1 , !"wchar_size" , i32 4 }
!10 = ! { i32 7 , !"PIC Level" , i32 2 }
!11 = ! { !"clang version 8.0.0 " }
!12 = distinct !DISubprogram ( name: "b" , scope: !3 , file: !3 , line: 2 , type: !13 , scopeLine: 2 , flags: D I F l a g A l l C a l l s D e s c r i b e d , spFlags: D I S P F l a g D e f i n i t i o n | D I S P F l a g O p t i m i z e d , unit: !2 , retainedNodes: !16 )
!13 = !DISubroutineType ( types: !14 )
!14 = ! { !15 }
!15 = !DIBasicType ( name: "short" , size: 16 , encoding: D W _ A T E _ s i g n e d )
!16 = ! { !17 }
!17 = !DILocalVariable ( name: "i" , scope: !12 , file: !3 , line: 3 , type: !15 )
!18 = !DILocation ( line: 3 , column: 9 , scope: !12 )
!19 = !DILocation ( line: 4 , column: 7 , scope: !12 )
!20 = ! { !21 , !21 , i64 0 }
!21 = ! { !"omnipotent char" , !22 , i64 0 }
!22 = ! { !"Simple C/C++ TBAA" }
!23 = !DILocation ( line: 5 , column: 3 , scope: !12 )
!24 = !DILocation ( line: 6 , column: 10 , scope: !12 )
!25 = !DILocation ( line: 6 , column: 3 , scope: !12 )
!26 = distinct !DISubprogram ( name: "main" , scope: !3 , file: !3 , line: 8 , type: !27 , scopeLine: 8 , flags: D I F l a g A l l C a l l s D e s c r i b e d , spFlags: D I S P F l a g D e f i n i t i o n | D I S P F l a g O p t i m i z e d , unit: !2 , retainedNodes: !4 )
!27 = !DISubroutineType ( types: !28 )
!28 = ! { !29 }
!29 = !DIBasicType ( name: "int" , size: 32 , encoding: D W _ A T E _ s i g n e d )
!30 = !DILocation ( line: 8 , column: 14 , scope: !26 )
!31 = !DILocation ( line: 8 , column: 19 , scope: !26 )
