llvm-capstone

mirror of https://github.com/capstone-engine/llvm-capstone.git synced 2024-11-28 08:02:08 +00:00

History

Yonghong Song 3eb465a329 [DebugInfo] Fix assertion for extern void type Commit `d77ae1552f` ("[DebugInfo] Support to emit debugInfo for extern variables") added support to emit debuginfo for extern variables. Currently, only BPF target enables to emit debuginfo for extern variables. But if the extern variable has "void" type, the compilation will fail. -bash-4.4$ cat t.c extern void bla; void test() { void x = &bla; return x; } -bash-4.4$ clang -target bpf -g -O2 -S t.c missing global variable type !1 = distinct !DIGlobalVariable(name: "bla", scope: !2, file: !3, line: 1, isLocal: false, isDefinition: false) ... fatal error: error in backend: Broken module found, compilation aborted! PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. Stack dump: ... The IR requires a DIGlobalVariable must have a valid type and the "void" type does not generate any type, hence the above fatal error. Note that if the extern variable is defined as "const void", the compilation will succeed. -bash-4.4$ cat t.c extern const void bla; const void test() { const void x = &bla; return x; } -bash-4.4$ clang -target bpf -g -O2 -S t.c -bash-4.4$ cat t.ll ... !1 = distinct !DIGlobalVariable(name: "bla", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: false) !6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: null) ... Since currently, "const void extern_var" is supported by the debug info, it is natural that "void extern_var" should also be supported. This patch disabled assertion of "void extern_var" in IR verifier and add proper guarding when emiting potential null debug info type to dwarf types. Differential Revision: https://reviews.llvm.org/D81131		2020-06-08 13:43:18 -07:00
..
benchmarks
bindings
cmake	[CMake] Do not append -lm to CMAKE_REQUIRED_LIBRARIES on Apple	2020-06-05 12:45:30 -04:00
docs	[Docs] fix typos for llvm-mca; NFC	2020-06-07 11:14:24 -04:00
examples
include	[XCOFF][AIX] report_fatal_error when an overflow section is needed	2020-06-08 19:59:04 +00:00
lib	[DebugInfo] Fix assertion for extern void type	2020-06-08 13:43:18 -07:00
projects
resources
runtimes
test	[DebugInfo] Fix assertion for extern void type	2020-06-08 13:43:18 -07:00
tools	[SVE] Eliminate calls to default-false VectorType::get() from llvm-stress	2020-06-08 11:32:37 -07:00
unittests	[SuffixTree][MachOpt] Factoring out Suffix Tree and adding Unit Tests	2020-06-08 12:44:18 -07:00
utils	[gn build] Port `bb677cacc8`	2020-06-08 19:44:56 +00:00
.clang-format
.clang-tidy
.gitattributes
.gitignore
CMakeLists.txt	Automatically configure MLIR when flang is enabled	2020-05-27 07:31:49 +00:00
CODE_OWNERS.TXT	Add self as code owner for SCEV and IndVars	2020-05-26 17:35:54 -07:00
configure
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT

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