maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGenCXX/PR20038.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

15 lines
704 B
C++
Raw Normal View History

Stop messing with the 'g' group of options in CompilerInvocation. With this change, most 'g' options are rejected by CompilerInvocation. They remain only as Driver options. The new way to request debug info from cc1 is with "-debug-info-kind={line-tables-only|limited|standalone}" and "-dwarf-version={2|3|4}". In the absence of a command-line option to specify Dwarf version, the Toolchain decides it, rather than placing Toolchain-specific logic in CompilerInvocation. Also fix a bug in the Windows compatibility argument parsing in which the "rightmost argument wins" principle failed. Differential Revision: http://reviews.llvm.org/D13221 llvm-svn: 249655
2015-10-08 12:24:12 +08:00
// RUN: %clang_cc1 -triple %itanium_abi_triple -debug-info-kind=limited -mllvm -no-discriminators -emit-llvm %s -o - | FileCheck %s
PR20038: DebugInfo: Call sites without DebugLocs for temporary dtors after a conditional With && at the top level of an expression, the last thing done when emitting the expression was an unconditional jump to the cleanup block. To reduce the amount of stepping, the DebugLoc is omitted from the unconditional jump. This is done by clearing the IRBuilder's "CurrentDebugLocation"*. If this is not set to some non-empty value before the cleanup block is emitted, the cleanups don't get a location either. If a call without a location is emitted in a function with debug info, and that call is then inlined - bad things happen. (without a location for the call site, the inliner would just leave the inlined DebugLocs as they were - pointing to roots in the original function, not inlined into the current function) Follow up commit to LLVM will ensure that breaking the invariants of the DebugLoc chains by having chains that don't lead to the current function will fail assertions, so we shouldn't accidentally slip any of these cases in anymore. Those assertions may reveal further cases that need to be fixed in clang, though I've tried to test heavily to avoid that. * See r128471, r128513 for the code that clears the CurrentDebugLocation. Simply removing this code or moving the code into IRBuilder to apply to all unconditional branches would regress desired behavior, unfortunately. llvm-svn: 211722
2014-06-26 01:57:34 +08:00
struct C {
~C();
};
extern bool b;
Fix the dtor location issues in PR20038 harder. Originally committed in r211722, this fixed one case of dtor calls being emitted without locations (this causes problems for debug info if the call is then inlined), this caught only some of the cases. Instead of trying to re-enable the location before the cleanup, simply re-enable the location immediately after the unconditional branches in question using a scoped device to ensure the no-location state doesn't leak out arbitrarily. llvm-svn: 212761
2014-07-11 04:42:59 +08:00
// CHECK: call {{.*}}, !dbg [[DTOR_CALL1_LOC:![0-9]*]]
// CHECK: call {{.*}}, !dbg [[DTOR_CALL2_LOC:![0-9]*]]
[DebugInfo] NFC Clang test changes for: IR/Bitcode changes for DISubprogram flags. Differential Revision: https://reviews.llvm.org/D54756 llvm-svn: 347807
2018-11-29 05:18:07 +08:00
// CHECK: [[FUN1:.*]] = distinct !DISubprogram(name: "fun1",{{.*}} DISPFlagDefinition
[Driver] Pass -gno-column-info instead of -dwarf-column-info Making -g[no-]column-info opt out reduces the length of a typical CC1 command line. Additionally, in a non-debug compile, we won't see -dwarf-column-info.
2020-07-06 02:47:02 +08:00
// CHECK: [[DTOR_CALL1_LOC]] = !DILocation(line: [[@LINE+1]], column: 15, scope: [[FUN1]])
Fix the dtor location issues in PR20038 harder. Originally committed in r211722, this fixed one case of dtor calls being emitted without locations (this causes problems for debug info if the call is then inlined), this caught only some of the cases. Instead of trying to re-enable the location before the cleanup, simply re-enable the location immediately after the unconditional branches in question using a scoped device to ensure the no-location state doesn't leak out arbitrarily. llvm-svn: 212761
2014-07-11 04:42:59 +08:00
void fun1() { b && (C(), 1); }
[DebugInfo] NFC Clang test changes for: IR/Bitcode changes for DISubprogram flags. Differential Revision: https://reviews.llvm.org/D54756 llvm-svn: 347807
2018-11-29 05:18:07 +08:00
// CHECK: [[FUN2:.*]] = distinct !DISubprogram(name: "fun2",{{.*}} DISPFlagDefinition
[Driver] Pass -gno-column-info instead of -dwarf-column-info Making -g[no-]column-info opt out reduces the length of a typical CC1 command line. Additionally, in a non-debug compile, we won't see -dwarf-column-info.
2020-07-06 02:47:02 +08:00
// CHECK: [[DTOR_CALL2_LOC]] = !DILocation(line: [[@LINE+1]], column: 15, scope: [[FUN2]])
Fix the dtor location issues in PR20038 harder. Originally committed in r211722, this fixed one case of dtor calls being emitted without locations (this causes problems for debug info if the call is then inlined), this caught only some of the cases. Instead of trying to re-enable the location before the cleanup, simply re-enable the location immediately after the unconditional branches in question using a scoped device to ensure the no-location state doesn't leak out arbitrarily. llvm-svn: 212761
2014-07-11 04:42:59 +08:00
bool fun2() { return (C(), b) && 0; }