1cbaf847ab
When the zext gets promoted, it used to retain the original location, which pessimizes the debugging experience causing an unexpected jump in stepping at -Og. Fixes https://bugs.llvm.org/show_bug.cgi?id=46120 (which also contains a full C repro). Differential Revision: https://reviews.llvm.org/D81437
38 lines
1.6 KiB
LLVM
38 lines
1.6 KiB
LLVM
; RUN: opt < %s -codegenprepare -S -mtriple=x86_64-unknown-unknown | FileCheck %s --match-full-lines
|
|
|
|
; Make sure the promoted zext doesn't get a debug location associated.
|
|
; CHECK: %promoted = zext i8 %t to i64
|
|
|
|
define void @patatino(i8* %p, i64* %q, i32 %b, i32* %addr) !dbg !6 {
|
|
entry:
|
|
%t = load i8, i8* %p, align 1, !dbg !8
|
|
%zextt = zext i8 %t to i32, !dbg !9
|
|
%add = add nuw i32 %zextt, %b, !dbg !10
|
|
%add2 = add nuw i32 %zextt, 12, !dbg !11
|
|
store i32 %add, i32* %addr, align 4, !dbg !12
|
|
%s = zext i32 %add2 to i64, !dbg !13
|
|
store i64 %s, i64* %q, align 4, !dbg !14
|
|
ret void, !dbg !15
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.debugify = !{!3, !4}
|
|
!llvm.module.flags = !{!5}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
|
|
!1 = !DIFile(filename: "a2.ll", directory: "/")
|
|
!2 = !{}
|
|
!3 = !{i32 8}
|
|
!4 = !{i32 0}
|
|
!5 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!6 = distinct !DISubprogram(name: "patatino", linkageName: "patatino", scope: null, file: !1, line: 1, type: !7, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
|
|
!7 = !DISubroutineType(types: !2)
|
|
!8 = !DILocation(line: 1, column: 1, scope: !6)
|
|
!9 = !DILocation(line: 2, column: 1, scope: !6)
|
|
!10 = !DILocation(line: 3, column: 1, scope: !6)
|
|
!11 = !DILocation(line: 4, column: 1, scope: !6)
|
|
!12 = !DILocation(line: 5, column: 1, scope: !6)
|
|
!13 = !DILocation(line: 6, column: 1, scope: !6)
|
|
!14 = !DILocation(line: 7, column: 1, scope: !6)
|
|
!15 = !DILocation(line: 8, column: 1, scope: !6)
|