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. 5 6; CHECK: .loc {{.*}} main.swift:100 7; CHECK-NOT: .loc 8; CHECK: .loc {{.*}} main.swift:200 9; CHECK-NOT: .loc 10; CHECK: .loc {{.*}} main.swift:300 11; CHECK-NOT: .loc 12declare void @foo(double) 13 14define 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 20 ret i32 %4 21} 22!llvm.dbg.cu = !{!1} 23!llvm.module.flags = !{!0} 24 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: "/") 29 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) 32!32 = !{} 33 34!100 = !DILocation(line: 100, scope: !30) 35!200 = !DILocation(line: 200, scope: !30) 36!300 = !DILocation(line: 300, scope: !30) 37