Some internal checking functions should only be declared when both
NDEBUG and LLVM_ENABLE_ABI_BREAKING_CHECKS are undefined, otherwise you
would get compile errors similar to:
/usr/src/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:921:13: error: no member named 'VerifyDAGDivergence' in 'llvm::SelectionDAG'
921 | CurDAG->VerifyDAGDivergence();
| ~~~~~~ ^
Adjust the conditions for declaring and using these functions. This has
also been reported upstream.
Reported by: cy
PR: 280562
MFC after: 1 month
(cherry picked from commit a5b1eecbed)
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-19-init-18630-gf2ccf80136a0, the
last commit before the upstream release/19.x branch was created.
PR: 280562
MFC after: 1 month
(cherry picked from commit 0fca6ea1d4)
[CalcSpillWeights] Avoid x87 excess precision influencing weight result
Fixes#99396
The result of `VirtRegAuxInfo::weightCalcHelper` can be influenced by
x87 excess precision, which can result in slightly different register
choices when the compiler is hosted on x86_64 or i386. This leads to
different object file output when cross-compiling to i386, or native.
Similar to 7af3432e22b0, we need to add a `volatile` qualifier to the
local `Weight` variable to force it onto the stack, and avoid the excess
precision. Define `stack_float_t` in `MathExtras.h` for this purpose,
and use it.
This is the version of the fix for PR276961 that landed upstream.
PR: 276961
Reported by: cperciva
MFC after: 3 days
(cherry picked from commit 1a4b8325f6)
In preparation for applying the fix that landed upstream, this reverts
commit 397c2693fa:
Fix llvm register allocator for native/cross build differences
Work around an issue in LLVM's register allocator, which can cause
slightly different i386 object files, when produced by a native or cross
build of clang.
This adds another volatile qualifier to a float variable declaration in
the weightCalcHelper() function, which otherwise produces slightly
different float results on amd64 and i386 hosts. In turn, this can lead
to different (but equivalent) register choices, and thus non-identical
assembly code.
See https://github.com/llvm/llvm-project/issues/99396 for more details.
Note this is a temporary fix, meant to merge in time for 13.4. As soon
as upstream has a permanent solution we will import that.
PR: 276961
Reported by: cperciva
MFC after: 3 days
(cherry picked from commit 52552d7572)
Work around an issue in LLVM's register allocator, which can cause
slightly different i386 object files, when produced by a native or cross
build of clang.
This adds another volatile qualifier to a float variable declaration in
the weightCalcHelper() function, which otherwise produces slightly
different float results on amd64 and i386 hosts. In turn, this can lead
to different (but equivalent) register choices, and thus non-identical
assembly code.
See https://github.com/llvm/llvm-project/issues/99396 for more details.
Note this is a temporary fix, meant to merge in time for 13.4. As soon
as upstream has a permanent solution we will import that.
PR: 276961
Reported by: cperciva
MFC after: 3 days
(cherry picked from commit 397c2693fa)
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-18359-g93248729cfae, the
last commit before the upstream release/18.x branch was created.
PR: 276104
MFC after: 1 month
(cherry picked from commit 7a6dacaca1)
Reapply "RegisterCoalescer: Add implicit-def of super register when coalescing SUBREG_TO_REG"
This reverts commit c398fa009a47eb24f88383d5e911e59e70f8db86.
PPC backend was fixed in 2f82662ce901c6666fceb9c6c5e0de216a1c9667
Since it causes an assertion failure building /sys/dev/fb/vga.c:
https://github.com/llvm/llvm-project/issues/76416
PR: 276104
MFC after: 1 month
(cherry picked from commit edc2dc17b1)
[PEI] Don't zero out noreg operands
A tail call may have $noreg operands.
Fixes a crash.
Reviewed By: xgupta
Differential Revision: https://reviews.llvm.org/D156485
This should fix an assertion failure building qemu, specifically those
parts using -fzero-call-used-regs.
Reported by: Daniel Berrangé <dan-freebsd@berrange.com>
PR: 277474
MFC after: 3 days
(cherry picked from commit a39b3aa463)
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, the
last commit before the upstream release/17.x branch was created.
PR: 273753
MFC after: 1 month
(cherry picked from commit 06c3fb2749)
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-17826-g1f8ae9d7e7e4, the last commit before
the upstream release/16.x branch was created.
PR: 265425
MFC after: 2 weeks
