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5011 Commits

Author SHA1 Message Date
Eli Friedman
b4b8b0cc90 Add a target-specific branchless method for double-width relational 
comparisons on x86.  Essentially, the way this works is that SUB+SBB sets
the relevant flags the same way a double-width CMP would.

This is a substantial improvement over the generic lowering in LLVM. The output
is also shorter than the gcc-generated output; I haven't done any detailed
benchmarking, though.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127852 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 02:34:11 +00:00
Benjamin Kramer
1c10b8de46 BuildUDIV: If the divisor is even we can simplify the fixup of the multiplied value by introducing an early shift. 
This allows us to compile "unsigned foo(unsigned x) { return x/28; }" into
	shrl	$2, %edi
	imulq	$613566757, %rdi, %rax
	shrq	$32, %rax
	ret

instead of
	movl    %edi, %eax
	imulq   $613566757, %rax, %rcx
	shrq    $32, %rcx
	subl    %ecx, %eax
	shrl    %eax
	addl    %ecx, %eax
	shrl    $4, %eax

on x86_64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127829 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-17 20:39:14 +00:00
Richard Osborne
11bd0784d9 Add XCore intrinsic for setpsc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127821 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-17 18:42:05 +00:00
NAKAMURA Takumi
1aa7f7a997 test/CodeGen/X86/h-registers-1.ll: Add explicit -mtriple=x86_64-linux. It does not need to be checked on x86_64-win32 (aka Win64). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127800 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-17 04:24:40 +00:00
NAKAMURA Takumi
ede4e28ca3 test/CodeGen/X86/constant-pool-remat-0.ll: FileCheck-ize and add explicit -mtriple=x86_64-linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127775 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 23:01:31 +00:00
Cameron Zwarich
ebe8173941 The x86-64 ABI says that a bool is only guaranteed to be sign-extended to a byte 
rather than an int. Thankfully, this only causes LLVM to miss optimizations, not
generate incorrect code.

This just fixes the zext at the return. We still insert an i32 ZextAssert when
reading a function's arguments, but it is followed by a truncate and another i8
ZextAssert so it is not optimized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127766 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 22:20:18 +00:00
Cameron Zwarich
7be4b7ed75 Rename a test to be more inclusive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127765 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 22:20:12 +00:00
Daniel Dunbar
83320a023c Revert r127757, "Patch to a fix dwarf relocation problem on ARM. One-line fix 
plus the test where it used to break.", which broke Clang self-host of a
Debug+Asserts compiler, on OS X.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127763 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 22:16:39 +00:00
Richard Osborne
e17139b3e9 Add XCore intrinsics for setclk, setrdy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127761 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 21:56:00 +00:00
Renato Golin
2589d0aedf Patch to a fix dwarf relocation problem on ARM. One-line fix plus the test where it used to break. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127757 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 21:05:52 +00:00
Cameron Zwarich
0a00615b34 Add a test for i1 zeroext arguments on x86-64. We currently generate code that 
conforms to the ABI, but DAGCombine could in theory recognize the sequence of
zext asserts and truncates and generate incorrect code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127754 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 20:15:44 +00:00
Richard Osborne
bb057453db Add checkevent intrinsic to check if any resources owned by the current thread 
can event.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127741 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 18:34:00 +00:00
NAKAMURA Takumi
bfc4c983a6 test/CodeGen/X86: FileCheck-ize and add actions for x86_64-linux and x86_64-win32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127734 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 13:53:07 +00:00
NAKAMURA Takumi
37947c6bad test/CodeGen/X86: Add a pattern for Win64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127733 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 13:52:51 +00:00
NAKAMURA Takumi
ddbfbcf72e test/CodeGen/X86: FileCheck-ize and add explicit -mtriple=x86_64-linux. They are useless to Win64 target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127732 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 13:52:38 +00:00
NAKAMURA Takumi
4491aa49b3 test/CodeGen/X86/byval*.ll: Win64 has not supported byval yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127731 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 13:52:20 +00:00
NAKAMURA Takumi
67bf77e8fd test/CodeGen/X86/dyn-stackalloc.ll: FileCheck-ize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127730 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-16 13:52:08 +00:00
Bill Wendling
a24cb40be2 Some minor cleanups based on feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127694 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 20:47:26 +00:00
Evan Cheng
0191952296 Do not form thumb2 ldrd / strd if the offset is by multiple of 4. rdar://9133587 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127683 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 18:41:52 +00:00
Richard Osborne
8ae8cf4559 On the XCore the scavenging slot should be closest to the SP. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127680 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 15:10:11 +00:00
Richard Osborne
5aad8b3e78 Add XCore intrinsics for getps, setps, setsr and clrsr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127678 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 13:45:47 +00:00
Justin Holewinski
625eec10fe PTX: Set PTX 2.0 as the minimum supported version 
- Remove PTX 1.4 code generation
- Change type of intrinsics to .v4.i32 instead of .v4.i16
- Add and/or/xor integer instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127677 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 13:24:15 +00:00
Evan Cheng
d158fba3e4 Add a peephole optimization to optimize pairs of bitcasts. e.g. 
v2 = bitcast v1
...
v3 = bitcast v2
...
   = v3
=>
v2 = bitcast v1
...
   = v1
if v1 and v3 are of in the same register class.

bitcast between i32 and fp (and others) are often not nops since they
are in different register classes. These bitcast instructions are often
left because they are in different basic blocks and cannot be
eliminated by dag combine.

rdar://9104514


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127668 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 05:13:13 +00:00
Evan Cheng
bf34a5ec22 sext(undef) = 0, because the top bits will all be the same. 
zext(undef) = 0, because the top bits will be zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127649 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 02:22:10 +00:00
Bill Wendling
49c69bb70f Testcase for r127630. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127648 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 01:49:08 +00:00
Jim Grosbach
5edf24efac Clean up ARM tail calls a bit. They're pseudo-instructions for normal branches. 
Also more cleanly separate the ARM vs. Thumb functionality. Previously, the
encoding would be incorrect for some Thumb instructions (the indirect calls).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127637 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 00:30:40 +00:00
Bill Wendling
69a05a7b92 Generate a VTBL instruction instead of a series of loads and stores when we 
can. As Nate pointed out, VTBL isn't super performant, but it *has* to be better
than this:

_shuf:
@ BB#0:       @ %entry
  push        {r4, r7, lr}
  add         r7, sp, #4
  sub         sp, #12
  mov         r4, sp
  bic         r4, r4, #7
  mov         sp, r4
  mov         r2, sp
  vmov        d16, r0, r1
  orr         r0, r2, #6
  orr         r3, r2, #7
  vst1.8      {d16[0]}, [r3]
  vst1.8      {d16[5]}, [r0]
  subs        r4, r7, #4
  orr         r0, r2, #5
  vst1.8      {d16[4]}, [r0]
  orr         r0, r2, #4
  vst1.8      {d16[4]}, [r0]
  orr         r0, r2, #3
  vst1.8      {d16[0]}, [r0]
  orr         r0, r2, #2
  vst1.8      {d16[2]}, [r0]
  orr         r0, r2, #1
  vst1.8      {d16[1]}, [r0]
  vst1.8      {d16[3]}, [r2]
  vldr.64     d16, [sp]
  vmov        r0, r1, d16
  mov         sp, r4
  pop         {r4, r7, pc}

The "illegal" testcase in vext.ll is no longer illegal.
<rdar://problem/9078775>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 23:02:38 +00:00
Eric Christopher
29cfa21326 Fix this test up a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127621 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 21:05:21 +00:00
Evan Cheng
5ae1da96f2 Minor optimization. sign-ext/anyext of undef is still undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127598 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 18:15:55 +00:00
Justin Holewinski
ae3ce17bac PTX: Emit global arrays with proper sizes 
- Emit all arrays as type .b8 and proper sizes in bytes to conform
  to the output of nvcc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127584 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 15:40:11 +00:00
Justin Holewinski
ba02495a57 PTX: Add support for sqrt/sin/cos intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127578 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 14:09:33 +00:00
Che-Liang Chiou
f78847ee7b ptx: add set.p instruction and related changes to predicate execution 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127577 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-14 11:26:01 +00:00
Eric Christopher
8b3000b08e Saving files before committing is overrated. 
Add a RUN line to this test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127520 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-12 01:36:23 +00:00
Eric Christopher
af3dce5149 Sometimes isPredicable lies to us and tells us we don't need the operands. 
Go ahead and add them on when we might want to use them and let
later passes remove them.

Fixes rdar://9118569


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-12 01:09:29 +00:00
Jim Grosbach
dd11988c99 Properly pseudo-ize the ARM LDMIA_RET instruction. This has the nice side- 
effect that we get proper instruction printing using the "pop" mnemonic for it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 22:51:41 +00:00
Cameron Zwarich
899eaa3569 Roll r127459 back in: 
Optimize trivial branches in CodeGenPrepare, which often get created from the
lowering of objectsize intrinsics. Unfortunately, a number of tests were relying
on llc not optimizing trivial branches, so I had to add an option to allow them
to continue to test what they originally tested.

This fixes <rdar://problem/8785296> and <rdar://problem/9112893>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127498 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:52:04 +00:00
Cameron Zwarich
53aac15a60 Fix the GCC test suite issue exposed by r127477, which was caused by stack 
protector insertion not working correctly with unreachable code. Since that
revision was rolled out, this test doesn't actual fail before this fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127497 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 21:51:56 +00:00
Daniel Dunbar
950d3db5f4 Revert r127459, "Optimize trivial branches in CodeGenPrepare, which often get 
created from the", it broke some GCC test suite tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127477 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 19:30:30 +00:00
Cameron Zwarich
592ca3fda9 Optimize trivial branches in CodeGenPrepare, which often get created from the 
lowering of objectsize intrinsics. Unfortunately, a number of tests were relying
on llc not optimizing trivial branches, so I had to add an option to allow them
to continue to test what they originally tested.

This fixes <rdar://problem/8785296> and <rdar://problem/9112893>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127459 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 04:54:27 +00:00
Eric Christopher
de5e101b0d Change the x86 32-bit scheduler to register pressure and fix up the 
corresponding testcases back to the previous versions.

Fixes some performance regressions only seen on 32-bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127441 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 01:05:58 +00:00
Evan Cheng
9ef82ce4fe Avoid replacing the value of a directly stored load with the stored value if the load is indexed. rdar://9117613. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127440 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-11 00:48:56 +00:00
Jim Grosbach
d4a16ad85d Properly pseudo-ize MOVCCr and MOVCCs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127434 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 23:56:09 +00:00
Justin Holewinski
fca9efcbc4 PTX: Add preliminary support for floating-point divide and multiply-and-add 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127410 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 16:57:18 +00:00
Che-Liang Chiou
2f5565d21c ptx: add the rest of special registers of ISA version 2.0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127397 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 04:05:57 +00:00
Stuart Hastings
03d5826164 Revert 127359; it broke lencod. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127382 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-10 00:25:53 +00:00
Daniel Dunbar
edfab0ca1e Revert "Re-enable test and hope to silence the buildbots", still broken. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127369 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 22:48:46 +00:00
Benjamin Kramer
7bff3e7c1b Fix mistyped CHECK lines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127366 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 22:07:31 +00:00
Stuart Hastings
167831dcac Tweak test to work on Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127364 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 21:35:10 +00:00
Stuart Hastings
2f5443be11 Disable this test temporarily to reduce BuildBot complaints. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127363 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 21:33:47 +00:00
Stuart Hastings
2f26fa4838 X86 byval copies no longer always_inline. <rdar://problem/8706628> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127359 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 21:10:30 +00:00