1 ; RUN: llc -O0 < %s -mtriple=x86_64-unknown | FileCheck %s
2 ; This was extracted from a swift debugger stepping testcase and checks that the
3 ; fold (zext (load x)) -> (zext (truncate (zextload x)))
4 ; rule propagates the SDLoc of the load to the zextload.
6 ; CHECK: .loc {{.*}} main.swift:100
8 ; CHECK: .loc {{.*}} main.swift:200
10 ; CHECK: .loc {{.*}} main.swift:300
12 declare void @foo(double)
14 define i32 @zext_load(ptr %arg) !dbg !30 {
15 %1 = getelementptr inbounds i8, ptr %arg, i32 1
16 %2 = load i8, ptr %1, align 1, !dbg !100
17 %3 = uitofp i8 %2 to double, !dbg !200
18 call void @foo(double %3), !dbg !200
19 %4 = zext i8 %2 to i32, !dbg !300
23 !llvm.module.flags = !{!0}
25 !0 = !{i32 2, !"Debug Info Version", i32 3}
26 !1 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !3, isOptimized: false, emissionKind: FullDebug)
27 !2 = !DIModule(scope: null, name: "test", includePath: "")
28 !3 = !DIFile(filename: "main.swift", directory: "/")
30 !30 = distinct !DISubprogram(name: "main", scope: !2, file: !3, line: 1, type: !31, isLocal: false, isDefinition: true, isOptimized: false, unit: !1)
31 !31 = !DISubroutineType(types: !32)
34 !100 = !DILocation(line: 100, scope: !30)
35 !200 = !DILocation(line: 200, scope: !30)
36 !300 = !DILocation(line: 300, scope: !30)