https://bugs.llvm.org/show_bug.cgi?id=35112
Bug ID: 35112
Summary: Wrong debug info for unrolled loop induction variable
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: DebugInfo
Assignee: unassignedb...@nondot.org
Reporter: apra...@apple.com
CC: llvm-bugs@lists.llvm.org
void f() {
for (int i = 1; i <=32; i <<=2 )
bar(i>>1);
}
clang -O3 -g -S -emit-llvm -o - /tmp/shiftloop.c
entry:
tail call void @llvm.dbg.value(metadata i32 1, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 1, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 1, metadata !17, metadata
!DIExpression()), !dbg !20
%call = tail call i32 (i32, ...) bitcast (i32 (...)* @bar to i32 (i32,
...)*)(i32 0) #3, !dbg !21
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 1, metadata !17, metadata
!DIExpression()), !dbg !20
%call.1 = tail call i32 (i32, ...) bitcast (i32 (...)* @bar to i32 (i32,
...)*)(i32 2) #3, !dbg !21
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 1, metadata !17, metadata
!DIExpression()), !dbg !20
%call.2 = tail call i32 (i32, ...) bitcast (i32 (...)* @bar to i32 (i32,
...)*)(i32 8) #3, !dbg !21
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
tail call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata
!DIExpression()), !dbg !20
ret void, !dbg !23
}
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang
version 6.0.0 (trunk 316686) (llvm/trunk 316682)", isOptimized: true,
runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
