forked from OSchip/llvm-project
140 lines
7.2 KiB
LLVM
140 lines
7.2 KiB
LLVM
; REQUIRES: object-emission
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; RUN: llc -mtriple=i386-linux-gnu -filetype=obj -relocation-model=pic %s -o /dev/null
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; Derived from the test case in PR20367, there's nothing really positive to
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; test here (hence no FileCheck, etc). All that was wrong is that the debug info
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; intrinsics (introduced by inlining) in 'f1' were causing codegen to crash, but
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; since 'f1' is a nodebug function, there's no positive outcome to confirm, just
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; that debug info doesn't get in the way/cause a crash.
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; The test case isn't particularly well reduced/tidy, but as simple as I could
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; get the C++ source. I assume the complexity is mostly just about producing a
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; certain amount of register pressure, so it might be able to be simplified/made
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; more uniform.
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; Generated from:
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; $ clang-tot -cc1 -triple i386 -emit-obj -g -O3 repro.cpp
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; void sink(const void *);
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; int source();
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; void f3(int);
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;
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; extern bool b;
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;
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; struct string {
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; unsigned *mem;
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; };
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;
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; extern string &str;
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;
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; inline __attribute__((always_inline)) void s2(string *lhs) { sink(lhs->mem); }
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; inline __attribute__((always_inline)) void f() {
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; string str2;
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; s2(&str2);
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; sink(&str2);
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; }
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; void __attribute__((nodebug)) f1() {
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; for (int iter = 0; iter != 2; ++iter) {
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; f();
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; sink(str.mem);
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; if (b) return;
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; }
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; }
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%struct.string = type { i32* }
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@str = external constant %struct.string*
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@b = external global i8
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; Function Attrs: nounwind
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define void @_Z2f1v() #0 {
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entry:
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%str2.i = alloca %struct.string, align 4
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%0 = bitcast %struct.string* %str2.i to i8*, !dbg !26
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%1 = load %struct.string** @str, align 4
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%mem = getelementptr inbounds %struct.string* %1, i32 0, i32 0
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%iter.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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call void @llvm.lifetime.start(i64 4, i8* %0), !dbg !26
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call void @llvm.dbg.value(metadata !{%struct.string* %str2.i}, i64 0, metadata !16, metadata !{metadata !"0x102"}) #3, !dbg !26
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call void @llvm.dbg.value(metadata !{%struct.string* %str2.i}, i64 0, metadata !27, metadata !{metadata !"0x102"}) #3, !dbg !29
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call void @_Z4sinkPKv(i8* undef) #3, !dbg !29
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call void @_Z4sinkPKv(i8* %0) #3, !dbg !30
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call void @llvm.lifetime.end(i64 4, i8* %0), !dbg !31
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%2 = load i32** %mem, align 4, !tbaa !32
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%3 = bitcast i32* %2 to i8*
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call void @_Z4sinkPKv(i8* %3) #3
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%4 = load i8* @b, align 1, !tbaa !37, !range !39
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%tobool = icmp ne i8 %4, 0
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%inc = add nsw i32 %iter.02, 1
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%cmp = icmp eq i32 %inc, 2
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%or.cond = or i1 %tobool, %cmp
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br i1 %or.cond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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declare void @_Z4sinkPKv(i8*) #1
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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; Function Attrs: nounwind
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declare void @llvm.lifetime.start(i64, i8* nocapture) #3
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; Function Attrs: nounwind
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declare void @llvm.lifetime.end(i64, i8* nocapture) #3
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attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!23, !24}
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!llvm.ident = !{!25}
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!0 = metadata !{metadata !"0x11\004\00clang version 3.5.0 \001\00\000\00\001", metadata !1, metadata !2, metadata !3, metadata !10, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/<stdin>] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"<stdin>", metadata !"/tmp/dbginfo"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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!4 = metadata !{metadata !"0x13\00string\007\0032\0032\000\000\000", metadata !5, null, null, metadata !6, null, null, metadata !"_ZTS6string"} ; [ DW_TAG_structure_type ] [string] [line 7, size 32, align 32, offset 0] [def] [from ]
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!5 = metadata !{metadata !"repro.cpp", metadata !"/tmp/dbginfo"}
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!6 = metadata !{metadata !7}
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!7 = metadata !{metadata !"0xd\00mem\008\0032\0032\000\000", metadata !5, metadata !"_ZTS6string", metadata !8} ; [ DW_TAG_member ] [mem] [line 8, size 32, align 32, offset 0] [from ]
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!8 = metadata !{metadata !"0xf\00\000\0032\0032\000\000", null, null, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from unsigned int]
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!9 = metadata !{metadata !"0x24\00unsigned int\000\0032\0032\000\000\007", null, null} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
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!10 = metadata !{metadata !11, metadata !17}
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!11 = metadata !{metadata !"0x2e\00f\00f\00_Z1fv\0014\000\001\000\006\00256\001\0014", metadata !5, metadata !12, metadata !13, null, null, null, null, metadata !15} ; [ DW_TAG_subprogram ] [line 14] [def] [f]
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!12 = metadata !{metadata !"0x29", metadata !5} ; [ DW_TAG_file_type ] [/tmp/dbginfo/repro.cpp]
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!13 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !14, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!14 = metadata !{null}
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!15 = metadata !{metadata !16}
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!16 = metadata !{metadata !"0x100\00str2\0015\000", metadata !11, metadata !12, metadata !"_ZTS6string"} ; [ DW_TAG_auto_variable ] [str2] [line 15]
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!17 = metadata !{metadata !"0x2e\00s2\00s2\00_Z2s2P6string\0013\000\001\000\006\00256\001\0013", metadata !5, metadata !12, metadata !18, null, null, null, null, metadata !21} ; [ DW_TAG_subprogram ] [line 13] [def] [s2]
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!18 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!19 = metadata !{null, metadata !20}
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!20 = metadata !{metadata !"0xf\00\000\0032\0032\000\000", null, null, metadata !"_ZTS6string"} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from _ZTS6string]
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!21 = metadata !{metadata !22}
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!22 = metadata !{metadata !"0x101\00lhs\0016777229\000", metadata !17, metadata !12, metadata !20} ; [ DW_TAG_arg_variable ] [lhs] [line 13]
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!23 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!24 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
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!25 = metadata !{metadata !"clang version 3.5.0 "}
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!26 = metadata !{i32 15, i32 0, metadata !11, null}
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!27 = metadata !{metadata !"0x101\00lhs\0016777229\000", metadata !17, metadata !12, metadata !20, metadata !28} ; [ DW_TAG_arg_variable ] [lhs] [line 13]
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!28 = metadata !{i32 16, i32 0, metadata !11, null}
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!29 = metadata !{i32 13, i32 0, metadata !17, metadata !28}
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!30 = metadata !{i32 17, i32 0, metadata !11, null}
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!31 = metadata !{i32 18, i32 0, metadata !11, null}
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!32 = metadata !{metadata !33, metadata !34, i64 0}
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!33 = metadata !{metadata !"_ZTS6string", metadata !34, i64 0}
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!34 = metadata !{metadata !"any pointer", metadata !35, i64 0}
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!35 = metadata !{metadata !"omnipotent char", metadata !36, i64 0}
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!36 = metadata !{metadata !"Simple C/C++ TBAA"}
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!37 = metadata !{metadata !38, metadata !38, i64 0}
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!38 = metadata !{metadata !"bool", metadata !35, i64 0}
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!39 = metadata !{i8 0, i8 2}
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