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17 Commits

Author SHA1 Message Date
Weiming Zhao
404d8d84c6 Summary: Currently there is no way to disable deprecated warning from asm like this
clang  -target arm deprecated-asm.s -c
  deprecated-asm.s:30:9: warning: use of SP or PC in the list is deprecated
       stmia   r4!, {r12-r14}

We have to have an option what can disable it.

Patched by Yin Ma!

Reviewers: joey, echristo, weimingz

Subscribers: llvm-commits, aemerson

Differential Revision: https://reviews.llvm.org/D27219

llvm-svn: 288734
2016-12-05 23:55:13 +00:00
Sriraman Tallam
404f8de41a New llc option pie-copy-relocations to optimize access to extern globals.
This option indicates copy relocations support is available from the linker
when building as PIE and allows accesses to extern globals to avoid the GOT.

Differential Revision: https://reviews.llvm.org/D24849

llvm-svn: 284160
2016-10-13 20:54:39 +00:00
Mehdi Amini
a6cfd067ac Turn cl::values() (for enum) from a vararg function to using C++ variadic template
The core of the change is supposed to be NFC, however it also fixes
what I believe was an undefined behavior when calling:

 va_start(ValueArgs, Desc);

with Desc being a StringRef.

Differential Revision: https://reviews.llvm.org/D25342

llvm-svn: 283671
2016-10-08 19:41:06 +00:00
David Majnemer
47d3d1e5ef [MC, COFF] Support link /incremental conditionally
Today, we always take into account the possibility that object files
produced by MC may be consumed by an incremental linker.  This results
in us initialing fields which vary with time (TimeDateStamp) which harms
hermetic builds (e.g. verifying a self-host went well) and produces
sub-optimal code because we cannot assume anything about the relative
position of functions within a section (call sites can get redirected
through incremental linker thunks).

Let's provide an MCTargetOption which controls this behavior so that we
can disable this functionality if we know a-priori that the build will
not rely on /incremental.

llvm-svn: 256203
2015-12-21 22:09:27 +00:00
Colin LeMahieu
3f88c1dc9a [llvm-mc] Add --no-warn flag with -W alias to disable outputting warnings while assembling.
llvm-svn: 243338
2015-07-27 22:39:14 +00:00
Colin LeMahieu
d4a6dbfde8 [llvm-mc] Pushing plumbing through for --fatal-warnings flag.
llvm-svn: 243334
2015-07-27 21:56:53 +00:00
Chandler Carruth
0b619fcc8e [cleanup] Re-sort all the #include lines in LLVM using
utils/sort_includes.py.

I clearly haven't done this in a while, so more changed than usual. This
even uncovered a missing include from the InstrProf library that I've
added. No functionality changed here, just mechanical cleanup of the
include order.

llvm-svn: 225974
2015-01-14 11:23:27 +00:00
Eric Christopher
c817e964d4 Migrate ABIName to MCTargetOptions so that it can be shared between
the TargetMachine level and the MC level.

llvm-svn: 225891
2015-01-14 00:50:31 +00:00
Daniel Sanders
0ebf8e82e0 Add ability to emit internal instruction representation to CodeGen assembly output.
Summary:
This patch re-uses the implementation of 'llvm-mc -show-inst' and makes it
available to llc as 'llc -asm-show-inst'.

This is necessary to test parts of MIPS32r6/MIPS64r6 without resorting to
'llc -filetype=obj' tests. For example, on MIPS32r2 and earlier we use the
'jr $rs' instruction for indirect branches and returns. On MIPS32r6, we no
longer have 'jr $rs' and use 'jalr $zero, $rs' instead. The catch is that,
on MIPS32r6, 'jr $rs' is an alias for 'jalr $zero, $rs' and is the preferred
way of writing this instruction. As a result, all MIPS ISA's emit 'jr $rs' in
their assembly output and the assembler encodes this to different opcodes
according to the ISA.

Using this option, we can check that the MCInst really is a JR or a JALR by
matching the emitted comment. This removes the need for a 'llc -filetype=obj'
test.

Reviewers: rafael, dsanders

Reviewed By: dsanders

Subscribers: zoran.jovanovic, llvm-commits

Differential Revision: http://reviews.llvm.org/D4267

llvm-svn: 212603
2014-07-09 10:07:36 +00:00
Eric Christopher
c246cb10ff Move -dwarf-version to an MC level command line option so it's
used by all of the MC level tools and codegen. Fix up all uses
in the compiler to use this and set it on the context accordingly.

llvm-svn: 211257
2014-06-19 06:22:08 +00:00
Eric Christopher
5039e6ecfc Move MCOptions that aren't shared between programs into their specific
program and have them initialize the MCOptions struct explicitly.

llvm-svn: 209321
2014-05-21 21:05:09 +00:00
Eric Christopher
b9494934c4 This command line option is only used in one place. Move it there and
rename it to something more descriptive.

llvm-svn: 209263
2014-05-21 00:20:01 +00:00
Eric Christopher
04464d5263 Move the verbose asm option to be part of the options struct and
set appropriately.

llvm-svn: 209258
2014-05-20 23:59:50 +00:00
Eric Christopher
da6a1ff3cc Move more MC options into the MCTargetOptions structure.
No functional change.

llvm-svn: 208932
2014-05-15 23:27:49 +00:00
Eric Christopher
13af11bc2a Make the -L option for SaveTempLabels not be static. No functional change.
Note: This option name is terrible, we should fix this.
llvm-svn: 208929
2014-05-15 23:06:30 +00:00
Eric Christopher
ac8b0b7c03 Unify command line handling of MCTargetOptions and remove extra
options and code. No functional change.

llvm-svn: 208833
2014-05-15 01:10:50 +00:00
Evgeniy Stepanov
c242bd4b23 Create MCTargetOptions.
For now it contains a single flag, SanitizeAddress, which enables
AddressSanitizer instrumentation of inline assembly.

Patch by Yuri Gorshenin.

llvm-svn: 206971
2014-04-23 11:16:03 +00:00