git: 8792c03886d9 - main - Apply clang fixes for crashes compiling ARM/AArch64 CRC intrinsics
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Date: Mon, 29 May 2023 14:28:58 UTC
The branch main has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=8792c03886d9e6df10fbac825819603dc059c7ea commit 8792c03886d9e6df10fbac825819603dc059c7ea Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2023-05-29 14:27:58 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2023-05-29 14:28:18 +0000 Apply clang fixes for crashes compiling ARM/AArch64 CRC intrinsics Merge commit 069ecd0c6e2c from llvm-project (by Fangrui Song): [ARM] Check target feature support for __builtin_arm_crc* `__builtin_arm_crc*` requires the target feature crc which is available on armv8 and above. Calling the fuctions for armv7 leads to a SelectionDAG crash. ``` % clang -c --target=armv7-unknown-linux-gnueabi -c a.c fatal error: error in backend: Cannot select: intrinsic %llvm.arm.crc32b PLEASE submit a bug report to ... ``` Add `TARGET_BUILTIN` and define required features for these builtins to report an error in `CodeGenFunction::checkTargetFeatures`. The problem is quite widespread. I will add `TARGET_BUILTIN` for more builtins later. Fix https://github.com/llvm/llvm-project/issues/57802 Differential Revision: https://reviews.llvm.org/D134127 Merge commit b2d7a0dcf1ff from llvm-project (by Fangrui Song): [AArch64] Check target feature support for __builtin_arm_crc* This is the AArch64 counterpart of D134127. Daniel Kiss will change more `BUILTIN` to `TARGET_BUILTIN`. Fix #57802 Note that programs attempting to use ARM/AArch64 CRC intrinsics, when they are not supported by the targeted CPU, will still receive a regular compilation error (instead of a fatal backend error) similar to: 7zCrc.c:4:10: error: '__builtin_arm_crc32b' needs target feature crc return __builtin_arm_crc32b(a, b); ^ Reported by: Alastair Hogge <agh@riseup.net> PR: 271624 MFC after: 3 days --- .../clang/include/clang/Basic/BuiltinsAArch64.def | 20 ++++++++++++-------- .../clang/include/clang/Basic/BuiltinsARM.def | 20 ++++++++++++-------- .../llvm-project/clang/lib/Basic/Targets/AArch64.cpp | 2 ++ contrib/llvm-project/clang/lib/Basic/Targets/ARM.cpp | 2 ++ 4 files changed, 28 insertions(+), 16 deletions(-) diff --git a/contrib/llvm-project/clang/include/clang/Basic/BuiltinsAArch64.def b/contrib/llvm-project/clang/include/clang/Basic/BuiltinsAArch64.def index 65ab4fcced9a..3c0a5f12681d 100644 --- a/contrib/llvm-project/clang/include/clang/Basic/BuiltinsAArch64.def +++ b/contrib/llvm-project/clang/include/clang/Basic/BuiltinsAArch64.def @@ -17,6 +17,10 @@ # define LANGBUILTIN(ID, TYPE, ATTRS, BUILTIN_LANG) BUILTIN(ID, TYPE, ATTRS) #endif +#if defined(BUILTIN) && !defined(TARGET_BUILTIN) +# define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) BUILTIN(ID, TYPE, ATTRS) +#endif + #if defined(BUILTIN) && !defined(TARGET_HEADER_BUILTIN) # define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANG, FEATURE) BUILTIN(ID, TYPE, ATTRS) #endif @@ -45,14 +49,14 @@ BUILTIN(__builtin_arm_sev, "v", "") BUILTIN(__builtin_arm_sevl, "v", "") // CRC32 -BUILTIN(__builtin_arm_crc32b, "UiUiUc", "nc") -BUILTIN(__builtin_arm_crc32cb, "UiUiUc", "nc") -BUILTIN(__builtin_arm_crc32h, "UiUiUs", "nc") -BUILTIN(__builtin_arm_crc32ch, "UiUiUs", "nc") -BUILTIN(__builtin_arm_crc32w, "UiUiUi", "nc") -BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc") -BUILTIN(__builtin_arm_crc32d, "UiUiWUi", "nc") -BUILTIN(__builtin_arm_crc32cd, "UiUiWUi", "nc") +TARGET_BUILTIN(__builtin_arm_crc32b, "UiUiUc", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cb, "UiUiUc", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32h, "UiUiUs", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32ch, "UiUiUs", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32w, "UiUiUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32d, "UiUiWUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cd, "UiUiWUi", "nc", "crc") // Memory Tagging Extensions (MTE) BUILTIN(__builtin_arm_irg, "v*v*Ui", "t") diff --git a/contrib/llvm-project/clang/include/clang/Basic/BuiltinsARM.def b/contrib/llvm-project/clang/include/clang/Basic/BuiltinsARM.def index 0cea0a9051e5..53fe64c317d1 100644 --- a/contrib/llvm-project/clang/include/clang/Basic/BuiltinsARM.def +++ b/contrib/llvm-project/clang/include/clang/Basic/BuiltinsARM.def @@ -17,6 +17,10 @@ # define LANGBUILTIN(ID, TYPE, ATTRS, BUILTIN_LANG) BUILTIN(ID, TYPE, ATTRS) #endif +#if defined(BUILTIN) && !defined(TARGET_BUILTIN) +# define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) BUILTIN(ID, TYPE, ATTRS) +#endif + #if defined(BUILTIN) && !defined(TARGET_HEADER_BUILTIN) # define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANG, FEATURE) BUILTIN(ID, TYPE, ATTRS) #endif @@ -157,14 +161,14 @@ BUILTIN(__builtin_arm_mrrc, "LLUiUIiUIiUIi", "") BUILTIN(__builtin_arm_mrrc2, "LLUiUIiUIiUIi", "") // CRC32 -BUILTIN(__builtin_arm_crc32b, "UiUiUc", "nc") -BUILTIN(__builtin_arm_crc32cb, "UiUiUc", "nc") -BUILTIN(__builtin_arm_crc32h, "UiUiUs", "nc") -BUILTIN(__builtin_arm_crc32ch, "UiUiUs", "nc") -BUILTIN(__builtin_arm_crc32w, "UiUiUi", "nc") -BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc") -BUILTIN(__builtin_arm_crc32d, "UiUiLLUi", "nc") -BUILTIN(__builtin_arm_crc32cd, "UiUiLLUi", "nc") +TARGET_BUILTIN(__builtin_arm_crc32b, "UiUiUc", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cb, "UiUiUc", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32h, "UiUiUs", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32ch, "UiUiUs", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32w, "UiUiUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32d, "UiUiLLUi", "nc", "crc") +TARGET_BUILTIN(__builtin_arm_crc32cd, "UiUiLLUi", "nc", "crc") // ARMv8-M Security Extensions a.k.a CMSE BUILTIN(__builtin_arm_cmse_TT, "Uiv*", "n") diff --git a/contrib/llvm-project/clang/lib/Basic/Targets/AArch64.cpp b/contrib/llvm-project/clang/lib/Basic/Targets/AArch64.cpp index 8d8972c1613a..22b7cf4d0c7e 100644 --- a/contrib/llvm-project/clang/lib/Basic/Targets/AArch64.cpp +++ b/contrib/llvm-project/clang/lib/Basic/Targets/AArch64.cpp @@ -35,6 +35,8 @@ const Builtin::Info AArch64TargetInfo::BuiltinInfo[] = { {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr}, #define LANGBUILTIN(ID, TYPE, ATTRS, LANG) \ {#ID, TYPE, ATTRS, nullptr, LANG, nullptr}, +#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \ + {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE}, #define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE) \ {#ID, TYPE, ATTRS, HEADER, LANGS, FEATURE}, #include "clang/Basic/BuiltinsAArch64.def" diff --git a/contrib/llvm-project/clang/lib/Basic/Targets/ARM.cpp b/contrib/llvm-project/clang/lib/Basic/Targets/ARM.cpp index b2f61cff81c9..159b00dea5bb 100644 --- a/contrib/llvm-project/clang/lib/Basic/Targets/ARM.cpp +++ b/contrib/llvm-project/clang/lib/Basic/Targets/ARM.cpp @@ -979,6 +979,8 @@ const Builtin::Info ARMTargetInfo::BuiltinInfo[] = { {#ID, TYPE, ATTRS, nullptr, LANG, nullptr}, #define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) \ {#ID, TYPE, ATTRS, HEADER, ALL_LANGUAGES, nullptr}, +#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \ + {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE}, #define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE) \ {#ID, TYPE, ATTRS, HEADER, LANGS, FEATURE}, #include "clang/Basic/BuiltinsARM.def"