1 # Check that the backend can produce a load-and-trap instruction also in
2 # the presence of a DEBUG_VALUE machine instruction.
4 # RUN: llc %s -mtriple=s390x-linux-gnu -mcpu=zEC12 -start-before=postrapseudos \
5 # RUN: -o - 2>&1 | FileCheck %s
11 define i32 @f1(i32* %ptr) #1 {
13 %val = load i32, i32* %ptr
14 ; Keep the dbg metadata live by referencing it in the IR.
15 call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !7, metadata !DIExpression()), !dbg !9
16 %cmp = icmp eq i32 %val, 0
17 br i1 %cmp, label %if.then, label %if.end
19 if.then: ; preds = %entry
20 tail call void @llvm.trap()
23 if.end: ; preds = %entry
27 declare void @llvm.trap() #0
28 declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
30 declare void @llvm.stackprotector(i8*, i8**) #2
32 attributes #0 = { cold noreturn nounwind "target-cpu"="zEC12" }
33 attributes #1 = { "target-cpu"="zEC12" }
34 attributes #2 = { nounwind }
37 !llvm.module.flags = !{!3, !4}
39 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "llvm", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
40 !1 = !DIFile(filename: "test.ll", directory: "/tmp")
42 !3 = !{i32 2, !"Dwarf Version", i32 4}
43 !4 = !{i32 2, !"Debug Info Version", i32 3}
44 !5 = distinct !DISubprogram(name: "test_dbg_value", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
45 !6 = !DISubroutineType(types: !2)
46 !7 = !DILocalVariable(name: "in", arg: 1, scope: !5, file: !1, line: 1, type: !8)
47 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
48 !9 = !DILocation(line: 1, column: 1, scope: !5)
54 tracksRegLiveness: true
61 successors: %bb.1(0x00000001), %bb.2(0x7fffffff)
64 renamable $r2l = LMux killed renamable $r2d, 0, $noreg :: (load (s32) from %ir.ptr)
65 DBG_VALUE $noreg, $r2l, !7, !DIExpression(), debug-location !9
66 CHIMux renamable $r2l, 0, implicit-def $cc
67 DBG_VALUE $noreg, $r2l, !7, !DIExpression(), debug-location !9
68 BRC 14, 6, %bb.2, implicit killed $cc