Summary:
This patch adds support for the predicated integer halving add/sub
instructions:
* SHADD, UHADD, SRHADD, URHADD
* SHSUB, UHSUB, SHSUBR, UHSUBR
The specification can be found here:
https://developer.arm.com/docs/ddi0602/latest
Reviewed By: rovka
Differential Revision: https://reviews.llvm.org/D62000
llvm-svn: 361136
The scalar start/accumulator value of the fadd- and fmul reduction
should match the result type of the reduction, as well as the vector
element-type of the input vector. Although this was not explicitly
specified in the LangRef, it was taken for granted in code implementing
the reductions. The patch also fixes the LangRef by adding this
constraint.
Reviewed By: aemerson, nikic
Differential Revision: https://reviews.llvm.org/D60260
llvm-svn: 361133
Summary:
Currently, when a loop is cloned while inlining function (A) into function (B) the loop metadata is copied and then not modified at all. The loop metadata can encode the loop's start and end DILocations. Therefore, the new inlined loop in function (B) may have loop metadata which shows start and end locations residing in function (A).
This patch ensures loop metadata is updated while inlining so that the start and end DILocations are given the "inlinedAt" operand. I've also added a regression test for this.
This fix is required for D60831 because that patch uses loop metadata to determine the DILocation for the branches of new loop preheaders.
Reviewers: aprantl, dblaikie, anemet
Reviewed By: aprantl
Subscribers: eraman, hiraditya, llvm-commits
Tags: #debug-info, #llvm
Differential Revision: https://reviews.llvm.org/D61933
llvm-svn: 361132
Summary:
I inspected every test and did one of the following:
- changed the test to run in all language modes,
- added a comment explaining why the test is only applicable in a
certain mode,
- limited the test to language modes where it passes and added a FIXME
to fix the checker or the test.
Reviewers: alexfh, lebedev.ri
Subscribers: nemanjai, kbarton, arphaman, jdoerfert, lebedev.ri, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D62125
llvm-svn: 361131
This moves the sections from SymbolFileDWARF to DWARFContext, where it
was trivial to do so. A couple of sections are still left in
SymbolFileDWARF. These will be handled by separate patches.
llvm-svn: 361127
Fixes PR41692.
We currently sort dynamic relocations by (!is_relative,symbol_index).
Change it to (symbol_index,r_offset). We still place relative
relocations first because R_*_RELATIVE are the only dynamic relocations
with 0 symbol index (except on MIPS, which doesn't use DT_REL[A]COUNT
anyway).
This makes `readelf -r` debugging easier (relocations to the same symbol
are ordered by r_offset).
Refactor the test combreloc.s (renamed from combrelocs.s) to check
R_X86_64_RELATIVE, and delete --expand-relocs.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D61477
llvm-svn: 361125
Summary:
Avoid introducing hazard mitigation when lgkmcnt is reduced to 0.
Clarify code comments to explain assumptions made for this hazard
mitigation. Expand and correct test cases to cover variants of
s_waitcnt.
Reviewers: nhaehnle, rampitec
Subscribers: arsenm, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62058
llvm-svn: 361124
This is a mechanical rewrite of replaceSymbol(A, B) to A->replace(B).
I also added a comment to Symbol::replace().
Technically this change is not necessary, but this change makes code a
bit more concise.
Differential Revision: https://reviews.llvm.org/D62117
llvm-svn: 361123
Otherwise, we may set IsPreemptible (e.g. --dynamic-list) then clear it
(in replaceCommonSymbols()).
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D62107
llvm-svn: 361122
Summary:
This adds a new error for missing parentheses around lambdas in delete operators.
```
int main() {
delete []() { return new int(); }();
}
```
This will result in:
```
test.cpp:2:3: error: '[]' after delete interpreted as 'delete[]'
delete []() { return new int(); }();
^~~~~~~~~
test.cpp:2:9: note: add parentheses around the lambda
delete []() { return new int(); }();
^
( )
```
Reviewers: rsmith
Reviewed By: rsmith
Subscribers: riccibruno, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D36357
llvm-svn: 361119
This is the sibling transform for rL360899 (D61691):
maxnum(X, GreaterC) == C --> false
maxnum(X, GreaterC) <= C --> false
maxnum(X, GreaterC) < C --> false
maxnum(X, GreaterC) >= C --> true
maxnum(X, GreaterC) > C --> true
maxnum(X, GreaterC) != C --> true
llvm-svn: 361118
Summary:
This patch modifies the AVR toolchain so that if avr-gcc and avr-libc
are detected during compilation, the CRT, libgcc, libm, and libc anre
linked.
This matches avr-gcc's default behaviour, and the expected behaviour of
all C compilers - including the C runtime.
avr-gcc also needs a -mmcu specified in order to link runtime libraries.
The difference betwen this patch and avr-gcc is that this patch will
warn users whenever they compile without a runtime, as opposed to GCC,
which silently trims the runtime libs from the linker arguments when no
-mmcu is specified.
Reviewers: aaron.ballman, kparzysz, asb, hfinkel, brucehoult, TimNN
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D54334
llvm-svn: 361116
LocalLLDBInit.test requires Python module loading support.
CommandScriptImmediateOutput tests are specific to running scripts.
Disable all of them when Python support is disabled.
llvm-svn: 361115
This is needed when using compiler wrappers such as ccache or distcc
and should address the failure on clang-x86_64-debian-fast bot.
Differential Revision: https://reviews.llvm.org/D62104
llvm-svn: 361111
This is a follow-up refactoring patch after the introduction of usable TreeEntry pointers in D61706.
The EdgeInfo struct can now use a TreeEntry pointer instead of an index in VectorizableTree.
Committed on behalf of @vporpo (Vasileios Porpodas)
Differential Revision: https://reviews.llvm.org/D61795
llvm-svn: 361110
Summary:
Reduce size of Option class from 184 bytes to 136 bytes by
placing more member variables in Bit Field (16 bytes), and
reducing the initial sizes of Categories and Subs to 1 (32 bytes).
Saves about 48k for bin/opt.
Reviewed By: beanz
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62091
llvm-svn: 361107
Summary:
Was looking into supporting `(srl (shl x, c1), c2)` with c1 != c2 in dagcombiner,
this test changes, but makes `update_llc_test_checks.py` unhappy.
**Many** AMDGPU tests specify `-march`, not `-mtriple`, which results in `update_llc_test_checks.py`
defaulting to x86 asm function detection heuristics, which don't work here.
I propose to fix this by adding an infrastructure to map from `-march` to `-mtriple`,
in the UpdateTestChecks tooling.
Reviewers: RKSimon, MaskRay, arsenm
Reviewed By: arsenm
Subscribers: kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62099
llvm-svn: 361101
Summary:
Was looking into supporting `(srl (shl x, c1), c2)` with c1 != c2 in dagcombiner,
this test changes, but makes `update_llc_test_checks.py` unhappy
Reviewers: RKSimon
Reviewed By: RKSimon
Subscribers: javed.absar, kristof.beyls, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62097
llvm-svn: 361100
Summary:
Previously llvm-nm relied on a positional parameter to read two values
into the SegSect list. This worked, but required the "-s" paramater and
its arguments to be the last elements on the command-line.
The CommandLine library now supports mutli-var parameters, so it can
naturally deal with "-s" expecting two arguments, and now the input file
can appear anywhere (within reason) in the command line invocation. E.g.
llvm-nm -s __TEXT __text /bin/ls
llvm-nm /bin/ls -s __TEXT __text
rdar://27284011
Reviewers: lhames, pete
Reviewed By: pete
Subscribers: rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62070
llvm-svn: 361091
This reverts D53906.
D53906 increased p_align of PT_TLS on ARM/AArch64 to 32/64 to make the
static TLS layout compatible with Android Bionic's ELF TLS. However,
this may cause glibc ARM/AArch64 programs to crash (see PR41527).
The faulty PT_TLS in the executable satisfies p_vaddr%p_align != 0. The
remainder is normally 0 but may be non-zero with the hack in place. The
problem is that we increase PT_TLS's p_align after OutputSections'
addresses are fixed (assignAddress()). It is possible that
p_vaddr%old_p_align = 0 while p_vaddr%new_p_align != 0.
For a thread local variable defined in the executable, lld computed TLS
offset (local exec) is different from glibc computed TLS offset from
another module (initial exec/generic dynamic). Note: PR41527 said the
bug affects initial exec but actually generic dynamic is affected as
well.
(glibc is correct in that it compute offsets that satisfy
`offset%p_align == p_vaddr%p_align`, which is a basic ELF requirement.
This hack appears to work on FreeBSD rtld, musl<=1.1.22, and Bionic, but
that is just because they (and lld) incorrectly compute offsets that
satisfy `offset%p_align = 0` instead.)
Android developers are fine to revert this patch, carry this patch in
their tree before figuring out a long-term solution (e.g. a dummy .tdata
with sh_addralign=64 sh_size={0,1} in crtbegin*.o files. The overhead is
now insignificant after D62059).
Reviewed By: rprichard, srhines
Differential Revision: https://reviews.llvm.org/D62055
llvm-svn: 361090
After D62059, we don't align p_memsz of PT_TLS to p_align. The
getRelocTargetVA formula should align it instead.
It becomes clear that R_NEG_TLS and R_TLS are opposite from each other.
In i386-tls-le-align.s, I put ret after call ___tls_get_addr@plt as
otherwise ld.bfd would reject the relaxation:
TLS transition from R_386_TLS_GD to R_386_TLS_LE_32 against `a' at 0x3 in section `.text' failed
llvm-svn: 361088
Cullen Rhodes