forked from OSchip/llvm-project
112 lines
5.0 KiB
LLVM
112 lines
5.0 KiB
LLVM
; RUN: llc -O1 -mtriple=x86_64-apple-darwin < %s | FileCheck -check-prefix=DARWIN %s
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; RUN: llc -O1 -mtriple=x86_64-pc-linux-gnu < %s | FileCheck -check-prefix=LINUX %s
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; PR9493
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; Adapted from the original test case in r127757.
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; We use 'llc -O1' to induce variable 'x' to live in different locations.
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; We don't actually care where 'x' lives, or what exact optimizations get
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; used, as long as 'x' moves around we're fine.
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; // The variable 'x' lives in different locations, so it needs an entry in
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; // the .debug_loc table section, referenced by DW_AT_location.
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; // This ref is not relocatable on Darwin, and is relocatable elsewhere.
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; extern int g(int, int);
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; extern int a;
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;
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; void f(void) {
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; int x;
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; a = g(0, 0);
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; x = 1;
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; while (x & 1) { x *= a; }
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; a = g(x, 0);
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; x = 2;
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; while (x & 2) { x *= a; }
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; a = g(0, x);
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; }
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; // The 'x' variable and its symbol reference location
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; DARWIN: DW_TAG_variable
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; DARWIN-NEXT: ## DW_AT_name
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; DARWIN-NEXT: .long Lset{{[0-9]+}}
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; DARWIN-NEXT: ## DW_AT_decl_file
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; DARWIN-NEXT: ## DW_AT_decl_line
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; DARWIN-NEXT: ## DW_AT_type
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; DARWIN-NEXT: Lset{{[0-9]+}} = Ldebug_loc{{[0-9]+}}-Lsection_debug_loc ## DW_AT_location
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; DARWIN-NEXT: .long Lset{{[0-9]+}}
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; LINUX: DW_TAG_variable
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; LINUX-NEXT: # DW_AT_name
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; LINUX-NEXT: # DW_AT_decl_file
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; LINUX-NEXT: # DW_AT_decl_line
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; LINUX-NEXT: # DW_AT_type
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; LINUX-NEXT: .long .Ldebug_loc{{[0-9]+}} # DW_AT_location
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; ModuleID = 'simple.c'
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32"
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@a = external global i32
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define void @f() nounwind {
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entry:
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%call = tail call i32 @g(i32 0, i32 0) nounwind, !dbg !8
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store i32 %call, i32* @a, align 4, !dbg !8, !tbaa !9
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tail call void @llvm.dbg.value(metadata !12, i64 0, metadata !5), !dbg !13
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br label %while.body
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while.body: ; preds = %entry, %while.body
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%x.017 = phi i32 [ 1, %entry ], [ %mul, %while.body ]
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%mul = mul nsw i32 %call, %x.017, !dbg !14
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%and = and i32 %mul, 1, !dbg !14
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%tobool = icmp eq i32 %and, 0, !dbg !14
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br i1 %tobool, label %while.end, label %while.body, !dbg !14
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while.end: ; preds = %while.body
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tail call void @llvm.dbg.value(metadata !{i32 %mul}, i64 0, metadata !5), !dbg !14
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%call4 = tail call i32 @g(i32 %mul, i32 0) nounwind, !dbg !15
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store i32 %call4, i32* @a, align 4, !dbg !15, !tbaa !9
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tail call void @llvm.dbg.value(metadata !16, i64 0, metadata !5), !dbg !17
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br label %while.body9
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while.body9: ; preds = %while.end, %while.body9
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%x.116 = phi i32 [ 2, %while.end ], [ %mul12, %while.body9 ]
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%mul12 = mul nsw i32 %call4, %x.116, !dbg !18
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%and7 = and i32 %mul12, 2, !dbg !18
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%tobool8 = icmp eq i32 %and7, 0, !dbg !18
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br i1 %tobool8, label %while.end13, label %while.body9, !dbg !18
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while.end13: ; preds = %while.body9
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tail call void @llvm.dbg.value(metadata !{i32 %mul12}, i64 0, metadata !5), !dbg !18
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%call15 = tail call i32 @g(i32 0, i32 %mul12) nounwind, !dbg !19
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store i32 %call15, i32* @a, align 4, !dbg !19, !tbaa !9
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ret void, !dbg !20
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}
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declare i32 @g(i32, i32)
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declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
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!llvm.dbg.sp = !{!0}
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!llvm.dbg.lv.f = !{!5}
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!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"f", metadata !"f", metadata !"", metadata !1, i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, void ()* @f} ; [ DW_TAG_subprogram ]
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!1 = metadata !{i32 589865, metadata !"simple.c", metadata !"/home/rengol01/temp/tests/dwarf/relocation", metadata !2} ; [ DW_TAG_file_type ]
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!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"simple.c", metadata !"/home/rengol01/temp/tests/dwarf/relocation", metadata !"clang version 3.0 (trunk)", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
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!3 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
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!4 = metadata !{null}
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!5 = metadata !{i32 590080, metadata !6, metadata !"x", metadata !1, i32 5, metadata !7, i32 0} ; [ DW_TAG_auto_variable ]
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!6 = metadata !{i32 589835, metadata !0, i32 4, i32 14, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]
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!7 = metadata !{i32 589860, metadata !2, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
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!8 = metadata !{i32 6, i32 3, metadata !6, null}
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!9 = metadata !{metadata !"int", metadata !10}
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!10 = metadata !{metadata !"omnipotent char", metadata !11}
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!11 = metadata !{metadata !"Simple C/C++ TBAA", null}
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!12 = metadata !{i32 1}
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!13 = metadata !{i32 7, i32 3, metadata !6, null}
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!14 = metadata !{i32 8, i32 3, metadata !6, null}
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!15 = metadata !{i32 9, i32 3, metadata !6, null}
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!16 = metadata !{i32 2}
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!17 = metadata !{i32 10, i32 3, metadata !6, null}
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!18 = metadata !{i32 11, i32 3, metadata !6, null}
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!19 = metadata !{i32 12, i32 3, metadata !6, null}
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!20 = metadata !{i32 13, i32 1, metadata !6, null}
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