133 lines
5.5 KiB
LLVM
133 lines
5.5 KiB
LLVM
; RUN: llc -O0 < %s | FileCheck %s
|
|
|
|
source_filename = "t.c"
|
|
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
|
|
target triple = "i386-pc-windows-msvc19.0.24215"
|
|
|
|
@str_const = internal unnamed_addr constant [4 x i8] c"str\00", align 1
|
|
|
|
declare i32 @puts(i8*)
|
|
declare void @use_i32(i32*)
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
|
|
|
|
; We had a line info quality issue where the LEA for the string constant had no
|
|
; location info, so the .cv_loc directive appeared after it. Now we have logic
|
|
; that tries to emit the first valid location to the top of each MBB.
|
|
|
|
define void @lea_str_loc(i1 %cond) !dbg !8 {
|
|
entry:
|
|
br i1 %cond, label %if.then, label %if.end, !dbg !17
|
|
|
|
if.then: ; preds = %entry
|
|
br label %return, !dbg !18
|
|
|
|
if.end: ; preds = %entry
|
|
%call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !19
|
|
br label %return, !dbg !20
|
|
|
|
return: ; preds = %if.end, %if.then
|
|
ret void, !dbg !20
|
|
}
|
|
|
|
; The t.c:5 line marker should appear immediately after the BB label.
|
|
|
|
; CHECK-LABEL: _lea_str_loc:
|
|
; CHECK: .cv_loc {{.*}} # t.c:4:5
|
|
; CHECK: jmp LBB{{.*}}
|
|
; CHECK: LBB0_{{.*}}: # %if.end
|
|
; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
|
|
; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]]
|
|
; CHECK-NEXT: movl %[[reg]], (%esp)
|
|
; CHECK-NEXT: calll _puts
|
|
|
|
define void @instr_no_loc(i1 %cond) !dbg !21 {
|
|
entry:
|
|
br i1 %cond, label %if.then, label %if.end, !dbg !22
|
|
|
|
if.then: ; preds = %entry
|
|
br label %return, !dbg !23
|
|
|
|
if.end: ; preds = %entry
|
|
call void asm sideeffect "nop", ""()
|
|
%call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !24
|
|
br label %return, !dbg !25
|
|
|
|
return: ; preds = %if.end, %if.then
|
|
ret void, !dbg !25
|
|
}
|
|
|
|
; CHECK-LABEL: _instr_no_loc:
|
|
; CHECK: .cv_loc {{.*}} # t.c:4:5
|
|
; CHECK: jmp LBB{{.*}}
|
|
; CHECK: LBB1_{{.*}}: # %if.end
|
|
; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
|
|
; CHECK-NEXT: #APP
|
|
; CHECK-NEXT: nop
|
|
; CHECK-NEXT: #NO_APP
|
|
; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]]
|
|
; CHECK-NEXT: movl %[[reg]], (%esp)
|
|
; CHECK-NEXT: calll _puts
|
|
|
|
define void @lea_dbg_value(i1 %cond) !dbg !30 {
|
|
entry:
|
|
%value = alloca i32
|
|
store i32 42, i32* %value
|
|
br i1 %cond, label %if.then, label %if.end, !dbg !31
|
|
|
|
if.then: ; preds = %entry
|
|
br label %return, !dbg !32
|
|
|
|
if.end: ; preds = %entry
|
|
call void @llvm.dbg.value(metadata i32* %value, metadata !35, metadata !13), !dbg !34
|
|
call void @use_i32(i32* %value), !dbg !33
|
|
br label %return, !dbg !34
|
|
|
|
return: ; preds = %if.end, %if.then
|
|
ret void, !dbg !34
|
|
}
|
|
|
|
; CHECK-LABEL: _lea_dbg_value:
|
|
; CHECK: .cv_loc {{.*}} # t.c:4:5
|
|
; CHECK: jmp LBB{{.*}}
|
|
; CHECK: LBB2_{{.*}}: # %if.end
|
|
; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
|
|
; CHECK: leal 4(%esp), %[[reg:[^ ]*]]
|
|
; CHECK: movl %[[reg]], (%esp)
|
|
; CHECK: calll _use_i32
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5, !6}
|
|
!llvm.ident = !{!7}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
|
|
!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "b32df088e991f1996b4e4deb3855c14b")
|
|
!2 = !{}
|
|
!3 = !{i32 1, !"NumRegisterParameters", i32 0}
|
|
!4 = !{i32 2, !"CodeView", i32 1}
|
|
!5 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!6 = !{i32 1, !"wchar_size", i32 2}
|
|
!7 = !{!"clang version 5.0.0 "}
|
|
!8 = distinct !DISubprogram(name: "lea_str_loc", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
|
|
!9 = !DISubroutineType(types: !10)
|
|
!10 = !{null, !11}
|
|
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!13 = !DIExpression(DW_OP_deref)
|
|
!14 = !DILocation(line: 2, column: 12, scope: !8)
|
|
!15 = !DILocation(line: 3, column: 7, scope: !16)
|
|
!16 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7)
|
|
!17 = !DILocation(line: 3, column: 7, scope: !8)
|
|
!18 = !DILocation(line: 4, column: 5, scope: !16)
|
|
!19 = !DILocation(line: 5, column: 3, scope: !8)
|
|
!20 = !DILocation(line: 6, column: 1, scope: !8)
|
|
!21 = distinct !DISubprogram(name: "instr_no_loc", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
|
|
!22 = !DILocation(line: 3, column: 7, scope: !21)
|
|
!23 = !DILocation(line: 4, column: 5, scope: !21)
|
|
!24 = !DILocation(line: 5, column: 3, scope: !21)
|
|
!25 = !DILocation(line: 6, column: 1, scope: !21)
|
|
!30 = distinct !DISubprogram(name: "lea_dbg_value", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
|
|
!31 = !DILocation(line: 3, column: 7, scope: !30)
|
|
!32 = !DILocation(line: 4, column: 5, scope: !30)
|
|
!33 = !DILocation(line: 5, column: 3, scope: !30)
|
|
!34 = !DILocation(line: 6, column: 1, scope: !30)
|
|
!35 = !DILocalVariable(name: "v", scope: !30, file: !1, line: 3, type: !11)
|