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r196508 | arnolds | 2013-12-05 07:14:40 -0800 (Thu, 05 Dec 2013) | 12 lines
SLPVectorizer: An in-tree vectorized entry cannot also be a scalar external use
We were creating external uses for scalar values in MustGather entries that also
had a ScalarToTreeEntry (they also are present in a vectorized tuple). This
meant we would keep a value 'alive' as a scalar and vectorized causing havoc.
This is not necessary because when we create a MustGather vector we explicitly
create external uses entries for the insertelement instructions of the
MustGather vector elements.
Fixes PR18129.
radar://15582184
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r196267 | rsandifo | 2013-12-03 11:01:54 +0000 (Tue, 03 Dec 2013) | 12 lines
[SystemZ] Fix choice of known-zero mask in insertion optimization
The backend converts 64-bit ORs into subreg moves if the upper 32 bits
of one operand and the low 32 bits of the other are known to be zero.
It then tries to peel away redundant ANDs from the upper 32 bits.
Since AND masks are canonicalized to exclude known-zero bits,
the test ORs the mask and the known-zero bits together before
checking for redundancy. The problem was that it was using the
wrong node when checking for known-zero bits, so could drop ANDs
that were still needed.
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r196104 | rafael | 2013-12-02 06:59:34 -0800 (Mon, 02 Dec 2013) | 1 line
Output .eh_frames on COFF too now that the integrated as is used on mingw.
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r196069 | alp | 2013-12-01 23:15:33 -0800 (Sun, 01 Dec 2013) | 6 lines
Update the LTO GoldPlugin documentation
* Update build instructions to reflect the current source tree layout.
* Don't inflict CVS on readers; there's a perfectly good git mirror.
* configure with --disable-werror making it possible to build using clang.
* ar and nm-new now support the -plugin option.
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r196100 | alp | 2013-12-02 06:17:47 -0800 (Mon, 02 Dec 2013) | 4 lines
Cut the gold plugin README down to size
This file hasn't been updated in years. Remove old information and point to
the current documentation at GoldPlugin.rst.
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r196129 | kkhoo | 2013-12-02 10:43:59 -0800 (Mon, 02 Dec 2013) | 1 line
Conservative fix for PR17827 - don't optimize a shift + and + compare sequence where the shift is logical unless the comparison is unsigned
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r196046 | tnorthover | 2013-12-01 06:16:24 -0800 (Sun, 01 Dec 2013) | 8 lines
ARM: fix bug in -Oz stack adjustment folding
Previously, we clobbered callee-saved registers when folding an "add
sp, #N" into a "pop {rD, ...}" instruction. This change checks whether
a register we're going to add to the "pop" could actually be live
outside the function before doing so and should fix the issue.
This should fix PR18081.
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r195401 | lhames | 2013-11-21 16:46:32 -0800 (Thu, 21 Nov 2013) | 8 lines
Fix a typo where we were creating <def,kill> operands instead of
<def,dead> ones.
Add an assertion to make sure we catch this in the future.
Fixes <rdar://problem/15464559>.
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r196044 | d0k | 2013-12-01 03:47:42 -0800 (Sun, 01 Dec 2013) | 6 lines
Revamp error checking in the ms inline asm parser.
- Actually abort when an error occurred.
- Check that the frontend lookup worked when parsing length/size/type operators.
Tested by a clang test. PR18096.
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r195973 | dsanders | 2013-11-30 13:47:57 +0000 (Sat, 30 Nov 2013) | 5 lines
[mips][msa] MSA loads and stores have a 10-bit offset. Account for this when lowering FrameIndex.
This prevents the compiler from emitting invalid ld.[bhwd]'s and st.[bhwd]'s
when the stack frame is between 512 and 32,768 bytes in size.
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Review of this commit by Matheus Almeida revealed that it is still possible to
emit invalid code (when the offset is not a multiple of the element size).
However, we agreed that this commit still represents an improvement since it
fixes many cases that previously emitted invalid code, and does not cause any
cases that previously emitted valid code to emit invalid code.
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r195972 | dsanders | 2013-11-30 13:15:21 +0000 (Sat, 30 Nov 2013) | 5 lines
[mips][msa] A small refactor to reduce patch noise in my next commit
No functional change. An if-statement has been split into two nested if-statements.
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r195975 | zjovanovic | 2013-11-30 19:12:28 +0000 (Sat, 30 Nov 2013) | 1 line
Fixed issue with microMIPS long branch.
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r195976 | zjovanovic | 2013-11-30 19:13:15 +0000 (Sat, 30 Nov 2013) | 1 line
Test case for issue with microMIPS long branch.
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To expand on those commit messages:
The immediate in a MIPS branch is multiplied by the instruction size before use
as an offset. For many MIPS ISA's this is 4 bytes, but for microMIPS it is 2
bytes. This commit corrects the scale factor used for microMIPS so that attempts
to use large offsets result in a valid sequence of instructions.
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U lib/MC/MCSectionCOFF.cpp
U lib/CodeGen/TargetLoweringObjectFileImpl.cpp
U test/MC/COFF/weak-symbol.ll
U test/MC/COFF/tricky-names.ll
G .
--- Recording mergeinfo for reverse merge of r195823 into '.':
G .
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r195941 | haoliu | 2013-11-28 18:11:22 -0800 (Thu, 28 Nov 2013) | 4 lines
AArch64: The pattern match should check the range of the immediate value.
Or we can generate some illegal instructions.
E.g. shrn2 v0.4s, v1.2d, #35. The legal range should be in [1, 16].
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r195939 | jiangning | 2013-11-28 17:38:08 -0800 (Thu, 28 Nov 2013) | 2 lines
Add missing test case for bsl_f64 support of AArch64 NEON.
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r195905 | jiangning | 2013-11-27 17:34:55 -0800 (Wed, 27 Nov 2013) | 3 lines
Remove the variable only used by assert to avoid the build failure
caused by build options [-Werror,-Wunused-variable].
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r196004 | void | 2013-11-30 19:36:07 -0800 (Sat, 30 Nov 2013) | 3 lines
Use 'unsigned char' to get this past gcc error message:
error: invalid conversion from 'unsigned char' to '{anonymous}::Sequence'
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r195677 | dpeixott | 2013-11-25 11:11:13 -0800 (Mon, 25 Nov 2013) | 41 lines
ARM integrated assembler generates incorrect nop opcode
This patch fixes a bug in the assembler that was causing bad code to
be emitted. When switching modes in an assembly file (e.g. arm to
thumb mode) we would always emit the opcode from the original mode.
Consider this small example:
$ cat align.s
.code 16
foo:
add r0, r0
.align 3
add r0, r0
$ llvm-mc -triple armv7-none-linux align.s -filetype=obj -o t.o
$ llvm-objdump -triple thumbv7 -d t.o
Disassembly of section .text:
foo:
0: 00 44 add r0, r0
2: 00 f0 20 e3 blx #4195904
6: 00 00 movs r0, r0
8: 00 44 add r0, r0
This shows that we have actually emitted an arm nop (e320f000)
instead of a thumb nop. Unfortunately, this encodes to a thumb
branch which causes bad things to happen when compiling assembly
code with align directives.
The fix is to notify the ARMAsmBackend when we switch mode. The
MCMachOStreamer was already doing this correctly. This patch makes
the same change for the MCElfStreamer.
There is still a bug in the way nops are emitted for alignment
because the MCAlignment fragment does not store the correct mode.
The ARMAsmBackend will emit nops for the last mode it knew about. In
the example above, we still generate an arm nop if we add a `.code
32` to the end of the file.
PR18019
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r195879 | tstellar | 2013-11-27 13:23:29 -0800 (Wed, 27 Nov 2013) | 6 lines
R600/SI: Use SGPR_32 register class for 32-bit SMRD outputs
Writing to the M0 register from an SMRD instruction hangs the GPU, so
we need to use the SGPR_32 register class, which does not include M0.
NOTE: This is a candidate for the 3.4 branch.
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r195878 | tstellar | 2013-11-27 13:23:20 -0800 (Wed, 27 Nov 2013) | 3 lines
R600: Add support for ISD::FROUND
NOTE: This is a candidate for the 3.4 branch.
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r195787 | arnolds | 2013-11-26 14:11:23 -0800 (Tue, 26 Nov 2013) | 8 lines
LoopVectorizer: Truncate i64 trip counts of i32 phis if necessary
In signed arithmetic we could end up with an i64 trip count for an i32 phi.
Because it is signed arithmetic we know that this is only defined if the i32
does not wrap. It is therefore safe to truncate the i64 trip count to a i32
value.
Fixes PR18049.
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r195834 | whitequark | 2013-11-27 03:03:18 -0800 (Wed, 27 Nov 2013) | 11 lines
[OCaml] Embed rpath into stub libraries and native executables
This commit embeds a set of linker flags with hardcoded paths to
the LLVM shared library on --enable-shared builds into .cmxa files
and stub dynamic libraries. This solution closely follows existing
rules for rpath in the LLVM tools, which had to be modified because
of differences in toolchain.
Without this patch, OCaml tests as well as opam bindings broke,
as neither of those updates LD_LIBRARY_PATH to include
the $prefix/lib directory.
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r195576 | venkatra | 2013-11-24 12:23:25 -0800 (Sun, 24 Nov 2013) | 2 lines
[Sparc] Emit large negative adjustments to SP/FP with sethi+xor instead of sethi+or. This generates correct code for both sparc32 and sparc64.
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