mirror of
https://github.com/RPCS3/llvm-mirror.git
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a2029fa58e
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
250 lines
16 KiB
LLVM
250 lines
16 KiB
LLVM
; RUN: llc -mtriple=x86_64-pc-linux -O2 < %s | FileCheck %s
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; RUN: llc -mtriple=x86_64-pc-linux -O2 -regalloc=basic < %s | FileCheck %s
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; Test to check .debug_loc support. This test case emits many debug_loc entries.
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; CHECK: .short 1 # Loc expr size
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; CHECK-NEXT: DW_OP_reg
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%0 = type { double }
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define hidden %0 @__divsc3(float %a, float %b, float %c, float %d) nounwind readnone !dbg !1 {
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entry:
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tail call void @llvm.dbg.value(metadata float %a, i64 0, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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tail call void @llvm.dbg.value(metadata float %b, i64 0, metadata !11, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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tail call void @llvm.dbg.value(metadata float %c, i64 0, metadata !12, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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tail call void @llvm.dbg.value(metadata float %d, i64 0, metadata !13, metadata !DIExpression()), !dbg !DILocation(scope: !1)
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%0 = tail call float @fabsf(float %c) nounwind readnone, !dbg !19 ; <float> [#uses=1]
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%1 = tail call float @fabsf(float %d) nounwind readnone, !dbg !19 ; <float> [#uses=1]
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%2 = fcmp olt float %0, %1, !dbg !19 ; <i1> [#uses=1]
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br i1 %2, label %bb, label %bb1, !dbg !19
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bb: ; preds = %entry
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%3 = fdiv float %c, %d, !dbg !20 ; <float> [#uses=3]
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tail call void @llvm.dbg.value(metadata float %3, i64 0, metadata !16, metadata !DIExpression()), !dbg !20
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%4 = fmul float %3, %c, !dbg !21 ; <float> [#uses=1]
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%5 = fadd float %4, %d, !dbg !21 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %5, i64 0, metadata !14, metadata !DIExpression()), !dbg !21
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%6 = fmul float %3, %a, !dbg !22 ; <float> [#uses=1]
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%7 = fadd float %6, %b, !dbg !22 ; <float> [#uses=1]
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%8 = fdiv float %7, %5, !dbg !22 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %8, i64 0, metadata !17, metadata !DIExpression()), !dbg !22
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%9 = fmul float %3, %b, !dbg !23 ; <float> [#uses=1]
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%10 = fsub float %9, %a, !dbg !23 ; <float> [#uses=1]
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%11 = fdiv float %10, %5, !dbg !23 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %11, i64 0, metadata !18, metadata !DIExpression()), !dbg !23
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br label %bb2, !dbg !23
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bb1: ; preds = %entry
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%12 = fdiv float %d, %c, !dbg !24 ; <float> [#uses=3]
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tail call void @llvm.dbg.value(metadata float %12, i64 0, metadata !16, metadata !DIExpression()), !dbg !24
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%13 = fmul float %12, %d, !dbg !25 ; <float> [#uses=1]
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%14 = fadd float %13, %c, !dbg !25 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %14, i64 0, metadata !14, metadata !DIExpression()), !dbg !25
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%15 = fmul float %12, %b, !dbg !26 ; <float> [#uses=1]
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%16 = fadd float %15, %a, !dbg !26 ; <float> [#uses=1]
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%17 = fdiv float %16, %14, !dbg !26 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %17, i64 0, metadata !17, metadata !DIExpression()), !dbg !26
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%18 = fmul float %12, %a, !dbg !27 ; <float> [#uses=1]
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%19 = fsub float %b, %18, !dbg !27 ; <float> [#uses=1]
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%20 = fdiv float %19, %14, !dbg !27 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %20, i64 0, metadata !18, metadata !DIExpression()), !dbg !27
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br label %bb2, !dbg !27
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bb2: ; preds = %bb1, %bb
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%y.0 = phi float [ %11, %bb ], [ %20, %bb1 ] ; <float> [#uses=5]
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%x.0 = phi float [ %8, %bb ], [ %17, %bb1 ] ; <float> [#uses=5]
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%21 = fcmp uno float %x.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
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%22 = fcmp uno float %y.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
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%or.cond = and i1 %21, %22 ; <i1> [#uses=1]
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br i1 %or.cond, label %bb4, label %bb46, !dbg !28
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bb4: ; preds = %bb2
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%23 = fcmp une float %c, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
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%24 = fcmp une float %d, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
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%or.cond93 = or i1 %23, %24 ; <i1> [#uses=1]
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br i1 %or.cond93, label %bb9, label %bb6, !dbg !29
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bb6: ; preds = %bb4
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%25 = fcmp uno float %a, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
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%26 = fcmp uno float %b, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
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%or.cond94 = and i1 %25, %26 ; <i1> [#uses=1]
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br i1 %or.cond94, label %bb9, label %bb8, !dbg !29
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bb8: ; preds = %bb6
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%27 = tail call float @copysignf(float 0x7FF0000000000000, float %c) nounwind readnone, !dbg !30 ; <float> [#uses=2]
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%28 = fmul float %27, %a, !dbg !30 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %28, i64 0, metadata !17, metadata !DIExpression()), !dbg !30
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%29 = fmul float %27, %b, !dbg !31 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %29, i64 0, metadata !18, metadata !DIExpression()), !dbg !31
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br label %bb46, !dbg !31
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bb9: ; preds = %bb6, %bb4
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%30 = fcmp ord float %a, 0.000000e+00 ; <i1> [#uses=1]
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%31 = fsub float %a, %a, !dbg !32 ; <float> [#uses=3]
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%32 = fcmp uno float %31, 0.000000e+00 ; <i1> [#uses=1]
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%33 = and i1 %30, %32, !dbg !32 ; <i1> [#uses=2]
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br i1 %33, label %bb14, label %bb11, !dbg !32
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bb11: ; preds = %bb9
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%34 = fcmp ord float %b, 0.000000e+00 ; <i1> [#uses=1]
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%35 = fsub float %b, %b, !dbg !32 ; <float> [#uses=1]
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%36 = fcmp uno float %35, 0.000000e+00 ; <i1> [#uses=1]
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%37 = and i1 %34, %36, !dbg !32 ; <i1> [#uses=1]
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br i1 %37, label %bb14, label %bb27, !dbg !32
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bb14: ; preds = %bb11, %bb9
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%38 = fsub float %c, %c, !dbg !32 ; <float> [#uses=1]
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%39 = fcmp ord float %38, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %39, label %bb15, label %bb27, !dbg !32
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bb15: ; preds = %bb14
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%40 = fsub float %d, %d, !dbg !32 ; <float> [#uses=1]
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%41 = fcmp ord float %40, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %41, label %bb16, label %bb27, !dbg !32
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bb16: ; preds = %bb15
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%iftmp.0.0 = select i1 %33, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
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%42 = tail call float @copysignf(float %iftmp.0.0, float %a) nounwind readnone, !dbg !33 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %42, i64 0, metadata !0, metadata !DIExpression()), !dbg !33
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%43 = fcmp ord float %b, 0.000000e+00 ; <i1> [#uses=1]
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%44 = fsub float %b, %b, !dbg !34 ; <float> [#uses=1]
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%45 = fcmp uno float %44, 0.000000e+00 ; <i1> [#uses=1]
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%46 = and i1 %43, %45, !dbg !34 ; <i1> [#uses=1]
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%iftmp.1.0 = select i1 %46, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
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%47 = tail call float @copysignf(float %iftmp.1.0, float %b) nounwind readnone, !dbg !34 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %47, i64 0, metadata !11, metadata !DIExpression()), !dbg !34
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%48 = fmul float %42, %c, !dbg !35 ; <float> [#uses=1]
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%49 = fmul float %47, %d, !dbg !35 ; <float> [#uses=1]
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%50 = fadd float %48, %49, !dbg !35 ; <float> [#uses=1]
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%51 = fmul float %50, 0x7FF0000000000000, !dbg !35 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %51, i64 0, metadata !17, metadata !DIExpression()), !dbg !35
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%52 = fmul float %47, %c, !dbg !36 ; <float> [#uses=1]
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%53 = fmul float %42, %d, !dbg !36 ; <float> [#uses=1]
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%54 = fsub float %52, %53, !dbg !36 ; <float> [#uses=1]
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%55 = fmul float %54, 0x7FF0000000000000, !dbg !36 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %55, i64 0, metadata !18, metadata !DIExpression()), !dbg !36
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br label %bb46, !dbg !36
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bb27: ; preds = %bb15, %bb14, %bb11
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%56 = fcmp ord float %c, 0.000000e+00 ; <i1> [#uses=1]
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%57 = fsub float %c, %c, !dbg !37 ; <float> [#uses=1]
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%58 = fcmp uno float %57, 0.000000e+00 ; <i1> [#uses=1]
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%59 = and i1 %56, %58, !dbg !37 ; <i1> [#uses=2]
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br i1 %59, label %bb33, label %bb30, !dbg !37
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bb30: ; preds = %bb27
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%60 = fcmp ord float %d, 0.000000e+00 ; <i1> [#uses=1]
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%61 = fsub float %d, %d, !dbg !37 ; <float> [#uses=1]
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%62 = fcmp uno float %61, 0.000000e+00 ; <i1> [#uses=1]
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%63 = and i1 %60, %62, !dbg !37 ; <i1> [#uses=1]
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%64 = fcmp ord float %31, 0.000000e+00 ; <i1> [#uses=1]
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%or.cond95 = and i1 %63, %64 ; <i1> [#uses=1]
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br i1 %or.cond95, label %bb34, label %bb46, !dbg !37
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bb33: ; preds = %bb27
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%.old = fcmp ord float %31, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %.old, label %bb34, label %bb46, !dbg !37
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bb34: ; preds = %bb33, %bb30
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%65 = fsub float %b, %b, !dbg !37 ; <float> [#uses=1]
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%66 = fcmp ord float %65, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %66, label %bb35, label %bb46, !dbg !37
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bb35: ; preds = %bb34
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%iftmp.2.0 = select i1 %59, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
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%67 = tail call float @copysignf(float %iftmp.2.0, float %c) nounwind readnone, !dbg !38 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %67, i64 0, metadata !12, metadata !DIExpression()), !dbg !38
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%68 = fcmp ord float %d, 0.000000e+00 ; <i1> [#uses=1]
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%69 = fsub float %d, %d, !dbg !39 ; <float> [#uses=1]
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%70 = fcmp uno float %69, 0.000000e+00 ; <i1> [#uses=1]
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%71 = and i1 %68, %70, !dbg !39 ; <i1> [#uses=1]
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%iftmp.3.0 = select i1 %71, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
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%72 = tail call float @copysignf(float %iftmp.3.0, float %d) nounwind readnone, !dbg !39 ; <float> [#uses=2]
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tail call void @llvm.dbg.value(metadata float %72, i64 0, metadata !13, metadata !DIExpression()), !dbg !39
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%73 = fmul float %67, %a, !dbg !40 ; <float> [#uses=1]
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%74 = fmul float %72, %b, !dbg !40 ; <float> [#uses=1]
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%75 = fadd float %73, %74, !dbg !40 ; <float> [#uses=1]
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%76 = fmul float %75, 0.000000e+00, !dbg !40 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %76, i64 0, metadata !17, metadata !DIExpression()), !dbg !40
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%77 = fmul float %67, %b, !dbg !41 ; <float> [#uses=1]
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%78 = fmul float %72, %a, !dbg !41 ; <float> [#uses=1]
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%79 = fsub float %77, %78, !dbg !41 ; <float> [#uses=1]
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%80 = fmul float %79, 0.000000e+00, !dbg !41 ; <float> [#uses=1]
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tail call void @llvm.dbg.value(metadata float %80, i64 0, metadata !18, metadata !DIExpression()), !dbg !41
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br label %bb46, !dbg !41
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bb46: ; preds = %bb35, %bb34, %bb33, %bb30, %bb16, %bb8, %bb2
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%y.1 = phi float [ %80, %bb35 ], [ %y.0, %bb34 ], [ %y.0, %bb33 ], [ %y.0, %bb30 ], [ %55, %bb16 ], [ %29, %bb8 ], [ %y.0, %bb2 ] ; <float> [#uses=2]
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%x.1 = phi float [ %76, %bb35 ], [ %x.0, %bb34 ], [ %x.0, %bb33 ], [ %x.0, %bb30 ], [ %51, %bb16 ], [ %28, %bb8 ], [ %x.0, %bb2 ] ; <float> [#uses=1]
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%81 = fmul float %y.1, 0.000000e+00, !dbg !42 ; <float> [#uses=1]
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%82 = fadd float %y.1, 0.000000e+00, !dbg !42 ; <float> [#uses=1]
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%tmpr = fadd float %x.1, %81, !dbg !42 ; <float> [#uses=1]
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%tmp89 = bitcast float %tmpr to i32 ; <i32> [#uses=1]
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%tmp90 = zext i32 %tmp89 to i64 ; <i64> [#uses=1]
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%tmp85 = bitcast float %82 to i32 ; <i32> [#uses=1]
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%tmp86 = zext i32 %tmp85 to i64 ; <i64> [#uses=1]
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%tmp87 = shl i64 %tmp86, 32 ; <i64> [#uses=1]
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%ins = or i64 %tmp90, %tmp87 ; <i64> [#uses=1]
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%tmp84 = bitcast i64 %ins to double ; <double> [#uses=1]
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%mrv75 = insertvalue %0 undef, double %tmp84, 0, !dbg !42 ; <%0> [#uses=1]
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ret %0 %mrv75, !dbg !42
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}
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declare float @fabsf(float)
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declare float @copysignf(float, float) nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!3}
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!llvm.module.flags = !{!48}
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!0 = !DILocalVariable(name: "a", line: 1921, arg: 1, scope: !1, file: !2, type: !9)
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!1 = distinct !DISubprogram(name: "__divsc3", linkageName: "__divsc3", line: 1922, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !3, scopeLine: 1922, file: !45, scope: !2, type: !4, retainedNodes: !43)
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!2 = !DIFile(filename: "libgcc2.c", directory: "/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc")
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!3 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !45, enums: !47, retainedTypes: !47, imports: null)
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!4 = !DISubroutineType(types: !5)
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!5 = !{!6, !9, !9, !9, !9}
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!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "SCtype", line: 170, file: !46, scope: !7, baseType: !8)
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!7 = !DIFile(filename: "libgcc2.h", directory: "/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc")
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "complex float", size: 64, align: 32, encoding: DW_ATE_complex_float)
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!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "SFtype", line: 167, file: !46, scope: !7, baseType: !10)
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!10 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
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!11 = !DILocalVariable(name: "b", line: 1921, arg: 2, scope: !1, file: !2, type: !9)
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!12 = !DILocalVariable(name: "c", line: 1921, arg: 3, scope: !1, file: !2, type: !9)
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!13 = !DILocalVariable(name: "d", line: 1921, arg: 4, scope: !1, file: !2, type: !9)
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!14 = !DILocalVariable(name: "denom", line: 1923, scope: !15, file: !2, type: !9)
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!15 = distinct !DILexicalBlock(line: 1922, column: 0, file: !45, scope: !1)
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!16 = !DILocalVariable(name: "ratio", line: 1923, scope: !15, file: !2, type: !9)
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!17 = !DILocalVariable(name: "x", line: 1923, scope: !15, file: !2, type: !9)
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!18 = !DILocalVariable(name: "y", line: 1923, scope: !15, file: !2, type: !9)
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!19 = !DILocation(line: 1929, scope: !15)
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!20 = !DILocation(line: 1931, scope: !15)
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!21 = !DILocation(line: 1932, scope: !15)
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!22 = !DILocation(line: 1933, scope: !15)
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!23 = !DILocation(line: 1934, scope: !15)
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!24 = !DILocation(line: 1938, scope: !15)
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!25 = !DILocation(line: 1939, scope: !15)
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!26 = !DILocation(line: 1940, scope: !15)
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!27 = !DILocation(line: 1941, scope: !15)
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!28 = !DILocation(line: 1946, scope: !15)
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!29 = !DILocation(line: 1948, scope: !15)
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!30 = !DILocation(line: 1950, scope: !15)
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!31 = !DILocation(line: 1951, scope: !15)
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!32 = !DILocation(line: 1953, scope: !15)
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!33 = !DILocation(line: 1955, scope: !15)
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!34 = !DILocation(line: 1956, scope: !15)
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!35 = !DILocation(line: 1957, scope: !15)
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!36 = !DILocation(line: 1958, scope: !15)
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!37 = !DILocation(line: 1960, scope: !15)
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!38 = !DILocation(line: 1962, scope: !15)
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!39 = !DILocation(line: 1963, scope: !15)
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!40 = !DILocation(line: 1964, scope: !15)
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!41 = !DILocation(line: 1965, scope: !15)
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!42 = !DILocation(line: 1969, scope: !15)
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!43 = !{!0, !11, !12, !13, !14, !16, !17, !18}
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!45 = !DIFile(filename: "libgcc2.c", directory: "/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc")
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!46 = !DIFile(filename: "libgcc2.h", directory: "/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc")
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!47 = !{}
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!48 = !{i32 1, !"Debug Info Version", i32 3}
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