142 lines
5.0 KiB
LLVM
142 lines
5.0 KiB
LLVM
|
; RUN: llc < %s -stop-after=virtregrewriter -o - | FileCheck %s
|
||
|
|
;
|
||
|
|
; Generated with "clang++ -g -O1 -S -emit-llvm"
|
||
|
|
;
|
||
|
|
; inline bool bar(char c) {
|
||
|
|
; return c >= '0' && c <= '9';
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
; unsigned foo(const char* data,
|
||
|
|
; int length,
|
||
|
|
; int* parsing_result) {
|
||
|
|
; unsigned value = 0;
|
||
|
|
; int result = 1;
|
||
|
|
; bool overflow = 0;
|
||
|
|
;
|
||
|
|
; while (bar(*data)) {
|
||
|
|
; if (value > 1) {
|
||
|
|
; result = 2;
|
||
|
|
; overflow = 1;
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
; if (!overflow)
|
||
|
|
; value = value + 1;
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
; if (length == 0 || value) {
|
||
|
|
; if (!overflow)
|
||
|
|
; result = 0;
|
||
|
|
; } else {
|
||
|
|
; result = 1;
|
||
|
|
; }
|
||
|
|
; bye:
|
||
|
|
; *parsing_result = result;
|
||
|
|
; return result == 0 ? value : 0;
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
; CHECK: {{^body:}}
|
||
|
|
; CHECK: bye.thread21:
|
||
|
|
; CHECK: DBG_LABEL !14
|
||
|
|
; CHECK: if.then5:
|
||
|
|
; CHECK: DBG_LABEL !14
|
||
|
|
; CHECK-NOT: DBG_LABEL !14
|
||
|
|
|
||
|
|
$_Z3barc = comdat any
|
||
|
|
|
||
|
|
; Function Attrs: nounwind uwtable
|
||
|
|
define dso_local i32 @_Z3fooPKciPi(i8* nocapture readonly %data, i32 %length, i32* nocapture %parsing_result) local_unnamed_addr !dbg !4 {
|
||
|
|
entry:
|
||
|
|
%0 = load i8, i8* %data, align 1
|
||
|
|
%call23 = tail call zeroext i1 @_Z3barc(i8 signext %0), !dbg !15
|
||
|
|
br i1 %call23, label %while.body, label %while.end
|
||
|
|
|
||
|
|
while.body: ; preds = %entry, %while.body
|
||
|
|
%overflow.026 = phi i8 [ %spec.select18, %while.body ], [ 0, %entry ]
|
||
|
|
%result.025 = phi i32 [ %spec.select, %while.body ], [ 1, %entry ]
|
||
|
|
%value.024 = phi i32 [ %value.1, %while.body ], [ 0, %entry ]
|
||
|
|
%cmp = icmp ugt i32 %value.024, 1
|
||
|
|
%spec.select = select i1 %cmp, i32 2, i32 %result.025
|
||
|
|
%spec.select18 = select i1 %cmp, i8 1, i8 %overflow.026
|
||
|
|
%1 = and i8 %spec.select18, 1
|
||
|
|
%2 = xor i8 %1, 1
|
||
|
|
%3 = zext i8 %2 to i32
|
||
|
|
%value.1 = add i32 %value.024, %3
|
||
|
|
%4 = load i8, i8* %data, align 1
|
||
|
|
%call = tail call zeroext i1 @_Z3barc(i8 signext %4), !dbg !15
|
||
|
|
br i1 %call, label %while.body, label %while.end.loopexit
|
||
|
|
|
||
|
|
while.end.loopexit: ; preds = %while.body
|
||
|
|
%phitmp = and i8 %spec.select18, 1
|
||
|
|
br label %while.end
|
||
|
|
|
||
|
|
while.end: ; preds = %while.end.loopexit, %entry
|
||
|
|
%value.0.lcssa = phi i32 [ 0, %entry ], [ %value.1, %while.end.loopexit ]
|
||
|
|
%result.0.lcssa = phi i32 [ 1, %entry ], [ %spec.select, %while.end.loopexit ]
|
||
|
|
%overflow.0.lcssa = phi i8 [ 0, %entry ], [ %phitmp, %while.end.loopexit ]
|
||
|
|
%cmp3 = icmp eq i32 %length, 0
|
||
|
|
%tobool4 = icmp ne i32 %value.0.lcssa, 0
|
||
|
|
%or.cond = or i1 %cmp3, %tobool4
|
||
|
|
br i1 %or.cond, label %if.then5, label %bye.thread21
|
||
|
|
|
||
|
|
bye.thread21: ; preds = %while.end
|
||
|
|
call void @llvm.dbg.label(metadata !14), !dbg !16
|
||
|
|
store i32 1, i32* %parsing_result, align 4
|
||
|
|
br label %6
|
||
|
|
|
||
|
|
if.then5: ; preds = %while.end
|
||
|
|
%tobool6 = icmp eq i8 %overflow.0.lcssa, 0
|
||
|
|
call void @llvm.dbg.label(metadata !14), !dbg !16
|
||
|
|
call void @llvm.dbg.label(metadata !14), !dbg !16
|
||
|
|
br i1 %tobool6, label %bye.thread, label %bye
|
||
|
|
|
||
|
|
bye.thread: ; preds = %if.then5
|
||
|
|
store i32 0, i32* %parsing_result, align 4
|
||
|
|
br label %5
|
||
|
|
|
||
|
|
bye: ; preds = %if.then5
|
||
|
|
store i32 %result.0.lcssa, i32* %parsing_result, align 4
|
||
|
|
%cmp10 = icmp eq i32 %result.0.lcssa, 0
|
||
|
|
br i1 %cmp10, label %5, label %6
|
||
|
|
|
||
|
|
; <label>:5: ; preds = %bye.thread, %bye
|
||
|
|
br label %6
|
||
|
|
|
||
|
|
; <label>:6: ; preds = %bye.thread21, %bye, %5
|
||
|
|
%7 = phi i32 [ %value.0.lcssa, %5 ], [ 0, %bye ], [ 0, %bye.thread21 ]
|
||
|
|
ret i32 %7
|
||
|
|
}
|
||
|
|
|
||
|
|
; Function Attrs: inlinehint nounwind uwtable
|
||
|
|
define linkonce_odr dso_local zeroext i1 @_Z3barc(i8 signext %c) local_unnamed_addr comdat {
|
||
|
|
entry:
|
||
|
|
%c.off = add i8 %c, -48
|
||
|
|
%0 = icmp ult i8 %c.off, 10
|
||
|
|
ret i1 %0
|
||
|
|
}
|
||
|
|
|
||
|
|
; Function Attrs: nounwind readnone speculatable
|
||
|
|
declare void @llvm.dbg.label(metadata) #0
|
||
|
|
|
||
|
|
attributes #0 = { nounwind readnone speculatable }
|
||
|
|
|
||
|
|
!llvm.dbg.cu = !{!0}
|
||
|
|
!llvm.module.flags = !{!3}
|
||
|
|
|
||
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
|
||
|
|
!1 = !DIFile(filename: "live-debug-label.cc", directory: ".")
|
||
|
|
!2 = !{}
|
||
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooPKciPi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)
|
||
|
|
!5 = !DISubroutineType(types: !6)
|
||
|
|
!6 = !{!7, !8, !11, !12}
|
||
|
|
!7 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
|
||
|
|
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
|
||
|
|
!9 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !10)
|
||
|
|
!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
||
|
|
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||
|
|
!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
|
||
|
|
!13 = !{!14}
|
||
|
|
!14 = !DILabel(scope: !4, name: "bye", file: !1, line: 28)
|
||
|
|
!15 = !DILocation(line: 12, column: 10, scope: !4)
|
||
|
|
!16 = !DILocation(line: 28, column: 1, scope: !4)
|