The PR is to generalize the re-use of the `compilerRT` code of adding
the path of `libflang_rt.runtime.a (so)` from AIX and LoP only to all
platforms via a new function `addFlangRTLibPath`.
It also added `-static-libflangrt` and `-shared-libflangrt` compiler
options to allow users choosing which `flang-rt` to link to. It defaults
to shared `flang-rt`, which is consistent with the linker behavior,
except on AIX, it defaults to static.
Also, PR #134320 exposed an issue in PR #131041 that the the overriding
`addFortranRuntimeLibs` is missing the link to `libquadmath`. This PR
also fixed that and restored the test case that PR #131041 broke.
This PR is to improve the driver code to build `flang-rt` path by
re-using the logic and code of `compiler-rt`.
1. Moved `addFortranRuntimeLibraryPath` and `addFortranRuntimeLibs` to
`ToolChain.h` and made them virtual so that they can be overridden if
customization is needed. The current implementation of those two
procedures is moved to `ToolChain.cpp` as the base implementation to
default to.
2. Both AIX and PPCLinux now override `addFortranRuntimeLibs`.
The overriding function of `addFortranRuntimeLibs` for both AIX and
PPCLinux calls `getCompilerRTArgString` => `getCompilerRT` =>
`buildCompilerRTBasename` to get the path to `flang-rt`. This code
handles `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR` setting. As shown in
`PPCLinux.cpp`, `FT_static` is the default. If not found, it will search
and build for `FT_shared`. To differentiate `flang-rt` from `clang-rt`,
a boolean flag `IsFortran` is passed to the chain of functions in order
to reach `buildCompilerRTBasename`.
When -mabi=ieeelongdouble is enabled by default, libc++ does not support
-mabi=ibmlongdouble.
Reviewed By: qiucf
Differential Revision: https://reviews.llvm.org/D139450
GCC 12 should have proper support for IEEE-754 compliant 128-bit
floating point in libstdc++. So warning is needed when linking against
older libstdc++ versions or LLVM libc++.
Glibc starts supporting float128 in both header and libraries since
2.32.
Reviewed By: jsji
Differential Revision: https://reviews.llvm.org/D112906
Port mmintrin.h which include x86 MMX intrinsics implementation to PowerPC platform (using Altivec).
To make the include process correct, PowerPC's toolchain class is overrided to insert new headers directory (named ppc_wrappers) into the path. Basic test cases for several intrinsic functions are added.
The header is mainly developed by Steven Munroe, with contributions from Paul Clarke, Bill Schmidt, Jinsong Ji and Zixuan Wu.
Reviewed By: Jinsong Ji
Differential Revision: https://reviews.llvm.org/D59924
llvm-svn: 358949
