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(i32* %arg) !dbg !30 { 15 %1 = bitcast i32* %arg to i8* 16 %2 = getelementptr inbounds i8, i8* %1, i32 1 17 %3 = load i8, i8* %2, align 1, !dbg !100 18 %4 = uitofp i8 %3 to double, !dbg !200 19 call void @foo(double %4), !dbg !200 20 %5 = zext i8 %3 to i32, !dbg !300 21 ret i32 %5 22} 23!llvm.dbg.cu = !{!1} 24!llvm.module.flags = !{!0} 25 26!0 = !{i32 2, !"Debug Info Version", i32 3} 27!1 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !3, isOptimized: false, emissionKind: FullDebug) 28!2 = !DIModule(scope: null, name: "test", includePath: "") 29!3 = !DIFile(filename: "main.swift", directory: "/") 30 31!30 = distinct !DISubprogram(name: "main", scope: !2, file: !3, line: 1, type: !31, isLocal: false, isDefinition: true, isOptimized: false, unit: !1) 32!31 = !DISubroutineType(types: !32) 33!32 = !{} 34 35!100 = !DILocation(line: 100, scope: !30) 36!200 = !DILocation(line: 200, scope: !30) 37!300 = !DILocation(line: 300, scope: !30) 38