12da8ce3d2
Introduce new linkage types linkonce_odr, weak_odr, common_odr
...
and extern_weak_odr. These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global. In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time. This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function. If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body. The
code generators on the other hand map weak and weak_odr linkage
to the same thing.
llvm-svn: 66339
2009-03-07 15:45:40 +00:00
d844dc305e
Added another darwin subtarget
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llvm-svn: 65662
2009-02-28 00:25:30 +00:00
561d1226b6
Tevert part of the x86 subtarget logic changes: when -march=x86-64
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is given, override the subtarget settings and enable 64-bit support.
This restores the earlier behavior, and fixes regressions on
Non-64-bit-capable x86-32 hosts.
This isn't necessarily the best approach, but the most obvious
alternative is to require -mcpu=x86-64 or -mattr=+64bit to be used
with -march=x86-64 when the host doesn't have 64-bit support. This
makes things little more consistent, but it's less convenient, and
it has the practical drawback of requiring lots of test changes, so
I opted for the above approach for now.
llvm-svn: 63642
2009-02-03 18:53:21 +00:00
7403751e16
Change Feature64Bit to not imply FeatureSSE2. All x86-64 hardware has
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SSE2, however it's possible to disable SSE2, and the subtarget support
code thinks that if 64-bit implies SSE2 and SSE2 is disabled then
64-bit should also be disabled. Instead, just mark all the 64-bit
subtargets as explicitly supporting SSE2.
Also, move the code that makes -march=x86-64 enable 64-bit support by
default to only apply when there is no explicit subtarget. If you
need to specify a subtarget and you want 64-bit code, you'll need to
select a subtarget that supports 64-bit code.
llvm-svn: 63575
2009-02-03 00:04:43 +00:00
e83866065b
Only force SSE level if it is not correct.
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Add an assert to check HasX86_64 status.
llvm-svn: 63552
2009-02-02 21:57:34 +00:00
5dbd26ae0f
remove #if 0 code on Bill's request.
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llvm-svn: 63542
2009-02-02 20:23:02 +00:00
a2d1f35e9a
Implement -mno-sse: if SSE is disabled on x86-64, don't store XMM on stack for
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var-args, and don't allow FP return values
llvm-svn: 63495
2009-02-01 18:15:56 +00:00
692ed0f67d
should have removed the + when manually applying a patch!
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llvm-svn: 62973
2009-01-25 20:29:34 +00:00
97be2f5840
revert this patch for now, because Codegen does still want to generate SSE code,
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for example in the case of va-args. XFAIL associated tests.
llvm-svn: 62972
2009-01-25 20:21:24 +00:00
a23c73bbdc
If user explicitly asks not to use SSE, don't force it. This fixes LLVM part of PR3402.
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llvm-svn: 62967
2009-01-25 17:58:56 +00:00
6de96a1b5d
Add the private linkage.
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llvm-svn: 62279
2009-01-15 20:18:42 +00:00
c3b09c3baa
Atom and Core i7 do not have same model number after all.
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llvm-svn: 61686
2009-01-05 08:45:01 +00:00
6e100a62b1
Add Intel processors core i7 and atom.
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llvm-svn: 61603
2009-01-03 04:24:44 +00:00
9a3ec1b208
Fix PR3210: Detect more Intel processors. Patch by Torok Edwin.
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llvm-svn: 61602
2009-01-03 04:04:46 +00:00
4c91aa3418
Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.
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llvm-svn: 61557
2009-01-02 05:35:45 +00:00
13f3a33f44
Fix x86 CPU id detection to identify Penryn (and future processors).
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llvm-svn: 61556
2009-01-02 05:29:20 +00:00
b9a012156b
Add initial support for back-scheduling address computations,
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especially in the case of addresses computed from loop induction
variables.
llvm-svn: 61075
2008-12-16 03:35:01 +00:00
c654143258
Re-apply 60689 now my head is screwed on right.
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llvm-svn: 60711
2008-12-08 19:29:03 +00:00
64bc11e7ce
Revert 60689. It caused many regressions on Darwin targets.
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llvm-svn: 60705
2008-12-08 17:38:02 +00:00
50fcc67a8b
Perform cheap checks first.
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llvm-svn: 60689
2008-12-08 06:52:43 +00:00
9efd2ce55b
Make LoopStrengthReduce smarter about hoisting things out of
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loops when they can be subsumed into addressing modes.
Change X86 addressing mode check to realize that
some PIC references need an extra register.
(I believe this is correct for Linux, if not, I'm sure
someone will tell me.)
llvm-svn: 60608
2008-12-05 21:47:27 +00:00
2a03c7e977
Re-did 60519. It turns out Darwin's handling of hidden visibility symbols are a bit more complicate than I expected. Both declarations and weak definitions still need a stub indirection. However, the stubs are in data section and they contain the addresses of the actual symbols.
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llvm-svn: 60571
2008-12-05 01:06:39 +00:00
6949f6135b
Temporarily revert r60519. It was causing a bootstrap failure:
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/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -DHAVE_CONFIG_H -I. -I../../../llvm-gcc.src/libgomp -I. -I../../../llvm-gcc.src/libgomp/config/posix -I../../../llvm-gcc.src/libgomp -Wall -pthread -Werror -O2 -g -O2 -MT barrier.lo -MD -MP -MF .deps/barrier.Tpo -c ../../../llvm-gcc.src/libgomp/barrier.c -fno-common -DPIC -o .libs/barrier.o
checking for sys/file.h... /var/folders/zG/zGE-ZJOGFiGjv0B5cs5oYE+++TM/-Tmp-//cc34Jg5P.s:13:non-relocatable subtraction expression, "_gomp_tls_key" minus "L1$pb"
/var/folders/zG/zGE-ZJOGFiGjv0B5cs5oYE+++TM/-Tmp-//cc34Jg5P.s:13:symbol: "_gomp_tls_key" can't be undefined in a subtraction expression
make[4]: *** [barrier.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -DHAVE_CONFIG_H -I. -I../../../llvm-gcc.src/libgomp -I. -I../../../llvm-gcc.src/libgomp/config/posix -I../../../llvm-gcc.src/libgomp -Wall -pthread -Werror -O2 -g -O2 -MT alloc.lo -MD -MP -MF .deps/alloc.Tpo -c ../../../llvm-gcc.src/libgomp/alloc.c -o alloc.o >/dev/null 2>&1
yes
checking for sys/param.h... make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-target-libgomp] Error 2
make[1]: *** Waiting for unfinished jobs....
llvm-svn: 60527
2008-12-04 04:07:00 +00:00
011c4fa8a1
Visibility hidden GVs do not require extra load of symbol address from the GOT or non-lazy-ptr.
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llvm-svn: 60519
2008-12-04 01:56:50 +00:00
595a4423dc
Fix build with gcc-4.4: it doesn't like PICStyle
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being both a namespace and a variable name.
llvm-svn: 60208
2008-11-28 09:29:37 +00:00
9c4b7d5c4f
Fix command-line option printing to print two spaces where needed,
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instead of requiring all "short description" strings to begin with
two spaces. This makes these strings less mysterious, and it fixes
some cases where short description strings mistakenly did not
begin with two spaces.
llvm-svn: 57521
2008-10-14 20:25:08 +00:00
1782584f56
Just don't transform this memset into "bzero" if no-builtin is specified.
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llvm-svn: 56888
2008-09-30 22:05:33 +00:00
bd09262e97
Add the new `-no-builtin' flag. This flag is meant to mimic the GCC
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`-fno-builtin' flag. Currently, it's used to replace "memset" with "_bzero"
instead of "__bzero" on Darwin10+. This arguably violates the meaning of this
flag, but is currently sufficient. The meaning of this flag should become more
specific over time.
llvm-svn: 56885
2008-09-30 21:22:07 +00:00
cf06fe476f
x86-64 PIC JIT fixes: do not generate the extra load for external GV's.
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llvm-svn: 53661
2008-07-16 01:34:02 +00:00
d62b4f5b37
Revert accidentially added stuff
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llvm-svn: 53321
2008-07-09 13:29:08 +00:00
fe047d241c
Switch to new section name handling facility
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llvm-svn: 53316
2008-07-09 13:27:16 +00:00
633e22b3ee
Back out 53091 for now.
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llvm-svn: 53109
2008-07-03 18:11:29 +00:00
4827deb74f
llvm-gcc sometimes marks external declarations hidden, because intializers are
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processed separately. Honour such situation and emit PIC relocations properly
in such case.
llvm-svn: 53091
2008-07-03 07:43:14 +00:00
d04cd22ff4
Don't use the GOT for symbols that are not externally visible.
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llvm-svn: 51865
2008-06-02 07:52:43 +00:00
ce4396bc92
Add CommonLinkage; currently tentative definitions
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are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both. The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.
llvm-svn: 51118
2008-05-14 20:12:51 +00:00
d78c400b5b
Clean up the use of static and anonymous namespaces. This turned up
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several things that were neither in an anonymous namespace nor static
but not intended to be global.
llvm-svn: 51017
2008-05-13 00:00:25 +00:00
3e58393c3d
Added addition atomic instrinsics and, or, xor, min, and max.
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llvm-svn: 50663
2008-05-05 19:05:59 +00:00
b42c28c3dc
Fix IsLinux being uninitialized on non-Linux targets.
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llvm-svn: 50660
2008-05-05 18:43:07 +00:00
6fd71c6512
Use a dedicated IsLinux flag instead of an ELFLinux TargetType.
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llvm-svn: 50649
2008-05-05 16:11:31 +00:00
bcde172222
Add AsmPrinter support for emitting a directive to declare that
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the code being generated does not require an executable stack.
Also, add target-specific code to make use of this on Linux
on x86.
llvm-svn: 50634
2008-05-05 00:28:39 +00:00
cb195f511d
Make stack alignment options global for all targets
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llvm-svn: 50157
2008-04-23 18:18:10 +00:00
a7495260ee
Provide ABI-correct stack alignment
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llvm-svn: 50154
2008-04-23 18:16:16 +00:00
a15cee1036
Initialize X863DNowLevel.
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llvm-svn: 49808
2008-04-16 19:03:02 +00:00
b9f38f38fa
Provide option for stack alignment override
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llvm-svn: 49593
2008-04-12 22:12:22 +00:00
980d7200c1
Speculatively micro-optimize memory-zeroing calls on Darwin 10.
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llvm-svn: 49048
2008-04-01 20:38:36 +00:00
cec773d8e7
Honour built-in defines on win64 targets for automatically subtarget recognize.
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Force stack alignment to 16 bytes on win targets.
llvm-svn: 48695
2008-03-22 21:18:22 +00:00
07a789d2b5
Recognize "windows" in target triple, not only "win32"
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llvm-svn: 48694
2008-03-22 21:12:53 +00:00
40d67c59d5
Remove bunch of gcc 4.3-related warnings from Target
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llvm-svn: 47369
2008-02-20 11:22:39 +00:00
67b818f503
Remove warning about 64-bit code on processor
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that doesn't support it. Per Chris.
llvm-svn: 47162
2008-02-15 18:09:51 +00:00
a20a773654
Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode.
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Before:
_main:
subq $8, %rsp
leaq _X(%rip), %rax
movsd 8(%rax), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Now:
_main:
subq $8, %rsp
movsd _X+8(%rip), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl %ecx, %ecx
movl %ecx, %eax
llvm-svn: 46850
2008-02-07 08:53:49 +00:00
Duncan Sands