Chris Lattner
c46ec649b1
silence more self assignment warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122920 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05 22:26:52 +00:00
Jakob Stoklund Olesen
631ee4b89f
Use the EdgeBundles analysis in X86FloatingPoint instead of recomputing CFG
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bundles in the pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 21:10:11 +00:00
Jakob Stoklund Olesen
8dd070edc2
Turn the EdgeBundles class into a stand-alone machine CFG analysis pass.
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The analysis will be needed by both the greedy register allocator and the
X86FloatingPoint pass. It only needs to be computed once when the CFG doesn't
change.
This pass is very fast, usually showing up as 0.0% wall time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122832 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 21:10:05 +00:00
Dale Johannesen
1e08cd1eae
Eliminate a warning compiling with llvm-gcc. (IMO the
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warning is overzealous but gcc is what it is.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04 19:31:24 +00:00
Evan Cheng
7158e08b8e
Use pushq / popq instead of subq $8, %rsp / addq $8, %rsp to adjust stack in
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prologue and epilogue if the adjustment is 8. Similarly, use pushl / popl if
the adjustment is 4 in 32-bit mode.
In the epilogue, takes care to pop to a caller-saved register that's not live
at the exit (either return or tailcall instruction).
rdar://8771137
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122783 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 22:53:22 +00:00
Benjamin Kramer
80220369b0
Try to reuse the value when lowering memset.
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This allows us to compile:
void test(char *s, int a) {
__builtin_memset(s, a, 15);
}
into 1 mul + 3 stores instead of 3 muls + 3 stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122710 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:57:05 +00:00
Oscar Fuentes
3458534f11
A workaround for a bug in cmake 2.8.3 diagnosed on PR 8885.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122706 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 19:32:31 +00:00
Chris Lattner
527b47d189
update a bunch of entries.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 18:31:38 +00:00
Rafael Espindola
03277e7fb4
Add support for the 'H' modifier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122667 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-01 20:58:46 +00:00
Oscar Fuentes
ba6f918a6d
Add to the list of cmake files the object file, not the asm file. This
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is necessary for executing the custom command that runs the
assember. Fixes PR8877.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122649 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-31 20:15:37 +00:00
Nick Lewycky
c00210cef2
Add another non-commutable instruction that gas accepts commuted forms for.
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Fixes PR8861.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122641 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-30 22:10:49 +00:00
NAKAMURA Takumi
7d63a2c2e8
CMake: Add disabling optimization on MSVC8 and MSVC10 as workaround for some files in Target/ARM and Target/X86.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122623 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-29 03:59:27 +00:00
Rafael Espindola
3a83c40ab6
Add support for the same encodings of the personality function that gnu as
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supports.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122577 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27 00:36:05 +00:00
Chris Lattner
6dbb5dc5eb
fix some sort of weird pasto
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122560 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 12:05:11 +00:00
Chris Lattner
8a4893e013
add a note
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-26 03:53:31 +00:00
Evan Cheng
e4a2dd2f1a
Code clean up. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122528 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 23:54:17 +00:00
Chris Lattner
036609bd7d
Flag -> Glue, the ongoing saga
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 18:28:41 +00:00
Benjamin Kramer
3e4106105b
Remove some obsolete README items, add a new one off the top of my head.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122495 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23 15:07:02 +00:00
Benjamin Kramer
e915ff30cd
X86: Lower a select directly to a setcc_carry if possible.
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int test(unsigned long a, unsigned long b) { return -(a < b); }
compiles to
_test: ## @test
cmpq %rsi, %rdi ## encoding: [0x48,0x39,0xf7]
sbbl %eax, %eax ## encoding: [0x19,0xc0]
ret ## encoding: [0xc3]
instead of
_test: ## @test
xorl %ecx, %ecx ## encoding: [0x31,0xc9]
cmpq %rsi, %rdi ## encoding: [0x48,0x39,0xf7]
movl $-1, %eax ## encoding: [0xb8,0xff,0xff,0xff,0xff]
cmovael %ecx, %eax ## encoding: [0x0f,0x43,0xc1]
ret ## encoding: [0xc3]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122451 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 23:09:28 +00:00
Benjamin Kramer
7d6fe13efc
Add some x86 specific dagcombines for conditional increments.
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(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122364 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-21 21:41:44 +00:00
Chris Lattner
f1b4eafbfe
rename MVT::Flag to MVT::Glue. "Flag" is a terrible name for
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something that just glues two nodes together, even if it is
sometimes used for flags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122310 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-21 02:38:05 +00:00
Nate Begeman
672fb6225b
Implement feedback from Bruno on making pblendvb an x86-specific ISD node in addition to being an intrinsic, and convert
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lowering to use it. Hopefully the pattern fragment is doing the right thing with XMM0, looks correct in testing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 22:04:24 +00:00
Daniel Dunbar
67e0c212c2
Add header...
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122247 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 15:45:51 +00:00
Daniel Dunbar
9b2f25e313
X86/MC/Mach-O: Split out createX86MachObjectWriter().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122246 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 15:07:39 +00:00
Chris Lattner
23a0199f05
now that addc/adde are gone, "ADDC" in the X86 backend uses EFLAGS results,
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the same as setcc. Optimize ADDC(0,0,FLAGS) -> SET_CARRY(FLAGS). This is
a step towards finishing off PR5443. In the testcase in that bug we now get:
movq %rdi, %rax
addq %rsi, %rax
sbbq %rcx, %rcx
testb $1, %cl
setne %dl
ret
instead of:
movq %rdi, %rax
addq %rsi, %rax
movl $0, %ecx
adcq $0, %rcx
testq %rcx, %rcx
setne %dl
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122219 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 01:37:09 +00:00
Chris Lattner
39ffcb7b62
We lower setb to sbb with the hope that the and will go away, when it
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doesn't, match it back to setb.
On a 64-bit version of the testcase before we'd get:
movq %rdi, %rax
addq %rsi, %rax
sbbb %dl, %dl
andb $1, %dl
ret
now we get:
movq %rdi, %rax
addq %rsi, %rax
setb %dl
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122217 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 01:16:03 +00:00
Chris Lattner
d8ff7eca8c
use for loop over types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122214 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 01:03:27 +00:00
Chris Lattner
5b85654844
Change the X86 backend to stop using the evil ADDC/ADDE/SUBC/SUBE nodes (which
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their carry depenedencies with MVT::Flag operands) and use clean and beautiful
EFLAGS dependences instead.
We do this by changing the modelling of SBB/ADC to have EFLAGS input and outputs
(which is what requires the previous scheduler change) and change X86 ISelLowering
to custom lower ADDC and friends down to X86ISD::ADD/ADC/SUB/SBB nodes.
With the previous series of changes, this causes no changes in the testsuite, woo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20 00:59:46 +00:00
Mon P Wang
a0fd0d5b27
Prevents PerformShuffleCombine from creating a node with an illegal type after legalize types
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has run, e.g., prevent creating an i64 node from a v2i64 when i64 is not a legal type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122206 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 23:55:53 +00:00
Chris Lattner
c19d1c3ba2
improve the setcc -> setcc_carry optimization to happen more
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consistently by moving it out of lowering into dag combine.
Add some missing patterns for matching away extended versions of setcc_c.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122201 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 22:08:31 +00:00
Chris Lattner
481eebc931
simplify some code to just reuse a setcc if we can instead of
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going through the CSE maps to get it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122196 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 21:23:48 +00:00
Chris Lattner
2a786eb030
now that generic vector types aren't selected onto MMX operations,
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we don't need -disable-mmx anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122189 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 20:19:20 +00:00
Chris Lattner
e019ec168b
reduce copy/paste programming with the power of for loops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122187 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 20:07:10 +00:00
Chris Lattner
a34b3cf953
X86 supports i8/i16 overflow ops (except i8 multiplies), we should
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generate them.
Now we compile:
define zeroext i8 @X(i8 signext %a, i8 signext %b) nounwind ssp {
entry:
%0 = tail call %0 @llvm.sadd.with.overflow.i8(i8 %a, i8 %b)
%cmp = extractvalue %0 %0, 1
br i1 %cmp, label %if.then, label %if.end
into:
_X: ## @X
## BB#0: ## %entry
subl $12, %esp
movb 16(%esp), %al
addb 20(%esp), %al
jo LBB0_2
Before we were generating:
_X: ## @X
## BB#0: ## %entry
pushl %ebp
movl %esp, %ebp
subl $8, %esp
movb 12(%ebp), %al
testb %al, %al
setge %cl
movb 8(%ebp), %dl
testb %dl, %dl
setge %ah
cmpb %cl, %ah
sete %cl
addb %al, %dl
testb %dl, %dl
setge %al
cmpb %al, %ah
setne %al
andb %cl, %al
testb %al, %al
jne LBB0_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122186 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19 20:03:11 +00:00
Rafael Espindola
1ec5bd31fe
Remove the MCObjectFormat class.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122147 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-18 05:37:28 +00:00
Rafael Espindola
bff66a86e6
Move some data to the TargetWriter.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-18 03:27:34 +00:00
Rafael Espindola
1ee03a835e
Relax push instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122121 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-18 01:01:34 +00:00
Nate Begeman
b65c175d32
Add support for matching psign & plendvb to the x86 target
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Remove unnecessary pandn patterns, 'vnot' patfrag looks through bitcasts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122098 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 22:55:37 +00:00
Rafael Espindola
6024c97ffa
Stub out explicit MCELFObjectTargetWriter interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122067 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 17:45:22 +00:00
Rafael Espindola
285b3e5b61
Move createELFObjectWriter to its own header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122064 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 16:59:53 +00:00
Daniel Dunbar
b87422778c
MC/Mach-O: On second thought, use a custom hook for enabling aggressive
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IsSymbolRefDifferenceFullyResolved, it turns out this does change behavior on
enough cases for x86-32 that I would rather wait a bit on it.
- In practice, we will want to change this eventually because it only means we
generate less relocations (it also eliminates the need for the horrible
'.set' hack that Darwin requires in some places).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122042 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 05:50:29 +00:00
Daniel Dunbar
7b62afac0a
MC/Target: Remove HasScatteredSymbols target hook variable, which has been
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superceded and was effectively dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122024 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 02:06:08 +00:00
Rafael Espindola
3ee33aa6f9
Make pushq produce signed relocations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122005 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 22:50:01 +00:00
Daniel Dunbar
5d05d9769e
MC/Mach-O: Lift some MachObjectWriter arguments into the target specific
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interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 17:21:02 +00:00
Daniel Dunbar
ae5abd595f
MC/Mach-O: Stub out explicit MCMachObjectTargetWriter interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121973 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 16:09:19 +00:00
Daniel Dunbar
aa4b7dd13b
MC/Mach-O: Move createMachObjectWriter into MCMachObjectWriter.h.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 16:08:33 +00:00
Daniel Dunbar
2761fc4270
MC: Move target specific fixup info descriptors to TargetAsmBackend instead of
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the MCCodeEmitter, which seems like a better organization.
- Also, cleaned up some magic constants while in the area.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121953 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 03:20:06 +00:00
Evan Cheng
f735f2da6e
Only rr forms of ADD*_DB are commutable.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121908 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15 22:57:36 +00:00
Evan Cheng
de7f920835
Disable auto-detection of AVX support since AVX codegen support is not ready.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121677 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-13 04:23:53 +00:00
Benjamin Kramer
20e3b4b380
Factor the (x & 2^n) ? 2^m : 0 instcombine into its own method and generalize it
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to catch cases where n != m with a shift.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121608 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-11 09:42:59 +00:00