1; RUN: llc < %s -stop-before=expand-isel-pseudos -o - | FileCheck %s 2 3source_filename = "foo.c" 4target datalayout = "E-m:e-p:32:32-i64:64-n32" 5target triple = "ppc32" 6 7; Verify that, when handling split-up integers, the 8; transferring of debug info takes the endianness 9; into consideration. 10; 11; The fragment expression at offset 0 should correspond 12; to the high part of the value on big-endian targets. 13 14; This basis of this ll file was created by running: 15; clang --target=powerpc -O1 -S -g -emit-llvm foo.c 16; 17; with foo.c being the program: 18; unsigned long long foo(void); 19; void bar() { 20; volatile unsigned long long result = foo(); 21; } 22; 23; This file is a slight tweak of that output, with irrelevant 24; lifetime intrinsics, metadata, and debug info being removed. 25 26; CHECK: [[DL:![0-9]+]] = !DILocalVariable(name: "result" 27; 28; High 32 bits in R3, low 32 bits in R4 29; CHECK: %0:gprc = COPY $r3 30; CHECK: DBG_VALUE debug-use %0, debug-use $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 0, 32) 31; CHECK: %1:gprc = COPY $r4 32; CHECK: DBG_VALUE debug-use %1, debug-use $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 32, 32) 33define void @bar() local_unnamed_addr #0 !dbg !6 { 34 %1 = alloca i64, align 8 35 %2 = tail call i64 @foo() 36 tail call void @llvm.dbg.value(metadata i64 %2, metadata !10, metadata !DIExpression()), !dbg !13 37 store volatile i64 %2, i64* %1, align 8 38 ret void 39} 40 41declare i64 @foo() local_unnamed_addr 42 43; Function Attrs: nounwind readnone speculatable 44declare void @llvm.dbg.value(metadata, metadata, metadata) #1 45 46attributes #0 = { nounwind } 47attributes #1 = { nounwind readnone speculatable } 48 49!llvm.dbg.cu = !{!0} 50!llvm.module.flags = !{!3, !4} 51!llvm.ident = !{!5} 52 53!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 54!1 = !DIFile(filename: "foo.c", directory: "/") 55!2 = !{} 56!3 = !{i32 2, !"Dwarf Version", i32 4} 57!4 = !{i32 2, !"Debug Info Version", i32 3} 58!5 = !{!"clang version 6.0.0"} 59!6 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !9) 60!7 = !DISubroutineType(types: !8) 61!8 = !{null} 62!9 = !{!10} 63!10 = !DILocalVariable(name: "result", scope: !6, file: !1, line: 3, type: !11) 64!11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !12) 65!12 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned) 66!13 = !DILocation(line: 3, column: 31, scope: !6) 67