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This is similar to the way @llvm.{set|long}jmp are handled.
The previously defined nacl-specific intrinsics are no longer used
and are overridden.
For the library call, call setjmp/longjmp without a preceding
underscore as these symbols exist in our runtime support code
(pnacl/support/setjmp_XXX.S)
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3429
R=mseaborn@chromium.org
Review URL: https://codereview.chromium.org/14715018
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Slowly trying to promote "dev" intrinsics that are being
tested to be accepted. Luckily, bswap is supported
without compiler_rt for ARM and x86 at least.
Test at default level and -O0. Also tested by
gcc/testsuite/gcc.dg/builtin-bswap-[1,2,3,4,5].c,
and a couple of other gcc tests.
We may want to blacklist odd argument sizes
like i8, and i1, which the x86 backend won't handle.
The i16 case is also interesting, however, it's easy
to do if you have an i32 bswap.
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3378
R=eliben@chromium.org
Review URL: https://codereview.chromium.org/14971004
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This could help prevent these expansion passes from inhibiting
optimisations than run after the expansion. e.g. It gives the
optimiser more freedom to move around reads from the varargs buffer
because they will not alias writes to other locations.
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3400
TEST=PNaCl toolchain trybots + GCC torture tests + LLVM test suite + Spec2k
Review URL: https://codereview.chromium.org/14060026
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r181423 | hfinkel | 2013-05-08 05:16:14 -0700 (Wed, 08 May 2013) | 5 lines
PPCInstrInfo::optimizeCompareInstr should not optimize FP compares
The floating-point record forms on PPC don't set the condition register bits
based on a comparison with zero (like the integer record forms do), but rather
based on the exception status bits.
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r181286 | arnolds | 2013-05-06 21:37:05 -0700 (Mon, 06 May 2013) | 7 lines
LoopVectorize: getConsecutiveVector must respect signed arithmetic
We were passing an i32 to ConstantInt::get where an i64 was needed and we must
also pass the sign if we pass negatives numbers. The start index passed to
getConsecutiveVector must also be signed.
Should fix PR15882.
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This IR pass for ARM inserts a comparison and a branch to trap if the
denominator of a DIV or REM instruction is zero. This makes ARM fault
identically to x86 in this case.
BUG= https://code.google.com/p/nativeclient/issues/detail?id=2833
R=eliben@chromium.org
Review URL: https://codereview.chromium.org/14607004
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This list is currently too small to support our tests
(scons, gcc, llvm). To prevent the tests from breaking,
there is a -pnaclabi-allow-intrinsics flag which defaults
to true. To turn on the checking for real,
set -pnaclabi-allow-intrinsics=0.
We will avoid actually using the -pnaclabi-allow-intrinsics
flags in tests, and try to just stick with the
-pnacl-disable-abi-check flag. Remove this flag soon.
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3378
R=eliben@chromium.org
Review URL: https://codereview.chromium.org/14670017
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The alignment is just a byte in the middle of Characteristics, not an
independent flag. Making it an independent field in the yaml
representation makes it more yamlio friendly.
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Test case by Michele Scandale!
Fixes PR10293: Load not hoisted out of loop with multiple exits.
There are few regressions with this patch, now tracked by
rdar:13817079, and a roughly equal number of improvements. The
regressions are almost certainly back luck because LoopRotate has very
little idea of whether rotation is profitable. Doing better requires a
more comprehensive solution.
This checkin is a quick fix that lacks generality (PR10293 has
a counter-example). But it trivially fixes the case in PR10293 without
interfering with other cases, and it does satify the criteria that
LoopRotate is a loop canonicalization pass that should avoid
heuristics and special cases.
I can think of two approaches that would probably be better in
the long run. Ultimately they may both make sense.
(1) LoopRotate should check that the current header would make a good
loop guard, and that the loop does not already has a sufficient
guard. The artifical SimplifiedLoopLatch check would be unnecessary,
and the design would be more general and canonical. Two difficulties:
- We need a strong guarantee that we won't endlessly rotate, so the
analysis would need to be precise in order to avoid the
SimplifiedLoopLatch precondition.
- Analysis like this are usually based on SCEV, which we don't want to
rely on.
(2) Rotate on-demand in late loop passes. This could even be done by
shoving the loop back on the queue after the optimization that needs
it. This could work well when we find LICM opportunities in
multi-branch loops. This requires some work, and it doesn't really
solve the problem of SCEV wanting a loop guard before the analysis.
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Reviewed-by: Vincent Lejeune <vljn@ovi.com>
Tested-By: Aaron Watry <awatry@gmail.com>
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Reviewed-by: Vincent Lejeune <vljn@ovi.com>
Tested-By: Aaron Watry <awatry@gmail.com>
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Reviewed-by: Vincent Lejeune <vljn@ovi.com>
Tested-By: Aaron Watry <awatry@gmail.com>
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As pointed out by Rafael Espindola, we should match the DWARF encodings
produced by GCC in both pic and non-pic modes. This was not the case
for the non-pic case.
This patch changes all DWARF encodings to DW_EH_PE_absptr for the
non-pic case, just like GCC does. The test case is updated to check
for both variants.
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This patch handles the R_PPC64_REL64 relocation type for powerpc64
for mcjit.
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A * (1 - (uitofp i1 C)) -> select C, 0, A
B * (uitofp i1 C) -> select C, B, 0
select C, 0, A + select C, B, 0 -> select C, B, A
These come up in code that has been hand-optimized from a select to a linear blend,
on platforms where that may have mattered. We want to undo such changes
with the following transform:
A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
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This just enables some testing I'd missed after implementing MCJIT
support.
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This patch adds the necessary configuration bits and #ifdef's to set up
the JIT/MCJIT test cases for SystemZ. Like other recent targets, we do
fully support MCJIT, but do not support the old JIT at all. Set up the
lit config files accordingly, and disable old-JIT unit tests.
Patch by Richard Sandiford.
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This adds all MC tests for the SystemZ target.
Patch by Richard Sandiford.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181206 91177308-0d34-0410-b5e6-96231b3b80d8
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This adds all DebugInfo tests for the SystemZ target.
This version of the patch incorporates feedback from reviews by
Eric Christopher and Rafael Espindola. Thanks to all reviewers!
Patch by Richard Sandiford.
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This adds all CodeGen tests for the SystemZ target.
This version of the patch incorporates feedback from a review by
Sean Silva. Thanks to all reviewers!
Patch by Richard Sandiford.
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(Would sometimes optimize away conacts used to extend a vector with undef values)
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pointers or not depending upon the function attributes.
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Looks like symbol resolution is not working on cygwin, the test fails
because __gxx_personality_v0 is not found.
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Thanks Nick Lewycky for pointing this out.
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Use unknown results for places where it would be needed
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We used to disable constant merging not only if a constant is llvm.used, but
also if an alias of a constant is llvm.used. This change fixes that.
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We currently have no way to register new eh frames on ARM.
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It looks like eh uses an unimplemented relocation on pp64
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This gets exception handling working on ELF and Macho (x86-64 at least).
Other than the EH frame registration, this patch also implements support
for GOT relocations which are used to locate the personality function on
MachO.
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With the change the disassembler now supports the XCore ISA in its
entirety.
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Now even the small structures could be passed within byval (small enough
to be stored in GPRs).
In regression tests next function prototypes are checked:
PR15293:
%artz = type { i32 }
define void @foo(%artz* byval %s)
define void @foo2(%artz* byval %s, i32 %p, %artz* byval %s2)
foo: "s" stored in R0
foo2: "s" stored in R0, "s2" stored in R2.
Next AAPCS rules are checked:
5.5 Parameters Passing, C.4 and C.5,
"ParamSize" is parameter size in 32bit words:
-- NSAA != 0, NCRN < R4 and NCRN+ParamSize > R4.
Parameter should be sent to the stack; NCRN := R4.
-- NSAA != 0, and NCRN < R4, NCRN+ParamSize < R4.
Parameter stored in GPRs; NCRN += ParamSize.
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X86ISelLowering has support to treat:
(icmp ne (and (xor %flags, -1), (shl 1, flag)), 0)
as if it were actually:
(icmp eq (and %flags, (shl 1, flag)), 0)
However, r179386 has code at the InstCombine level to handle this.
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Add support for min/max reductions when "no-nans-float-math" is enabled. This
allows us to assume we have ordered floating point math and treat ordered and
unordered predicates equally.
radar://13723044
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We can just use the initial element that feeds the reduction.
max(max(x, y), z) == max(max(x,y), max(x,z))
radar://13723044
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This removes dire warnings about AArch64 being unsupported and enables
the tests when appropriate on this platform.
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The MOVZ/MOVK instruction sequence may not be the most efficient (a
literal-pool load could be better) but adding that would require
reinstating the ConstantIslands pass.
For now the sequence is correct, and that's enough. Beware, as of
commit GNU ld does not appear to support the relocations needed for
this. Its primary purpose (for now) will be to support JITed code,
since in that case there is no guarantee of where your code will end
up in memory relative to external symbols it references.
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The intended semantics mirror autoconf, where the user is able to
specify a host triple, but if it's left to the build system then
"config.guess" is invoked for the default.
This also renames the LLVM_HOSTTRIPLE define to LLVM_HOST_TRIPLE to
fit in with the style of the surrounding defines.
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