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38187aec17
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7583 Commits

Author SHA1 Message Date
Nadav Rotem
38187aec17 Fix 10892 - When lowering SIGN_EXTEND_INREG do not lower v2i64 because the 
instruction set has no 64-bit SRA support.

llvm-svn: 141570
 2011-10-10 19:31:45 +00:00
Benjamin Kramer
c498279bec X86: Add patterns for the movbe instruction (mov + bswap, only available on atom) 
llvm-svn: 141563
 2011-10-10 18:34:56 +00:00
Craig Topper
251bbfb1f7 Put a bunch of calls to ToggleFeature behind proper if statements. 
llvm-svn: 141527
 2011-10-10 05:34:02 +00:00
Craig Topper
9b7ab95570 Add Ivy Bridge 16-bit floating point conversion instructions for the X86 disassembler. 
llvm-svn: 141505
 2011-10-09 07:31:39 +00:00
Jakob Stoklund Olesen
d94788edb9 Prevent potential NOREX bug. 
A GR8_NOREX virtual register is created when extrating a sub_8bit_hi
sub-register:

  %vreg2<def> = COPY %vreg1:sub_8bit_hi; GR8_NOREX:%vreg2 %GR64_ABCD:%vreg1
  TEST8ri_NOREX %vreg2, 1, %EFLAGS<imp-def>; GR8_NOREX:%vreg2

If such a live range is ever split, its register class must not be
inflated to GR8.  The sub-register copy can only target GR8_NOREX.

I dont have a test case for this theoretical bug.

llvm-svn: 141500
 2011-10-08 20:20:03 +00:00
Jakob Stoklund Olesen
b49557d06d Add TEST8ri_NOREX pseudo to constrain sub_8bit_hi copies. 
In 64-bit mode, sub_8bit_hi sub-registers can only be used by NOREX
instructions. The COPY created from the EXTRACT_SUBREG DAG node cannot
target all GR8 registers, only those in GR8_NOREX.

TO enforce this, we ensure that all instructions using the
EXTRACT_SUBREG are GR8_NOREX constrained.

This fixes PR11088.

llvm-svn: 141499
 2011-10-08 18:28:28 +00:00
Jakob Stoklund Olesen
78d177b5ce Constrain both operands on MOVZX32_NOREXrr8. 
This instruction is explicitly encoded without an REX prefix, so both
operands but be *_NOREX.

Also add an assertion to copyPhysReg() that fires when the MOV8rr_NOREX
constraints are not satisfied.

This fixes a miscompilation in 20040709-2 in the gcc test suite.

llvm-svn: 141410
 2011-10-07 20:15:54 +00:00
Evan Cheng
99b25c827c High bits of movmskp{s|d} and pmovmskb are known zero. rdar://10247336 
llvm-svn: 141371
 2011-10-07 17:21:44 +00:00
Craig Topper
761bf0e7d3 Add X86 disassembler support for RDFSBASE, RDGSBASE, WRFSBASE, and WRGSBASE. 
llvm-svn: 141358
 2011-10-07 07:02:24 +00:00
Craig Topper
71e09ffe7b Add X86 disassembler support for XSAVE, XRSTOR, and XSAVEOPT. 
llvm-svn: 141354
 2011-10-07 05:53:50 +00:00
Craig Topper
f083691b6d Revert part of r141274. Only need to change encoding for xchg %eax, %eax in 64-bit mode. This is because in 64-bit mode xchg %eax, %eax implies zeroing the upper 32-bits of RAX which makes it not a NOP. In 32-bit mode using NOP encoding is fine. 
llvm-svn: 141353
 2011-10-07 05:35:38 +00:00
Craig Topper
2614f6f120 Fix assembling of xchg %eax, %eax to not use the NOP encoding of 0x90. This was done by creating a new register group that excludes AX registers. Fixes PR10345. Also added aliases for flipping the order of the operands of xchg <reg>, %eax. 
llvm-svn: 141274
 2011-10-06 06:44:41 +00:00
Peter Collingbourne
253c6a3690 Build system infrastructure for multiple tblgens. 
llvm-svn: 141266
 2011-10-06 01:51:51 +00:00
Jakob Stoklund Olesen
17c6570446 Override TRI::getSubClassWithSubReg for X86. 
There are fewer registers with sub_8bit sub-registers in 32-bit mode
than in 64-bit mode.  In 32-bit mode, sub_8bit behaves the same as
sub_8bit_hi.

llvm-svn: 141206
 2011-10-05 20:26:33 +00:00
Craig Topper
c211a8e5a6 Change C++ style comments to C style comments in X86 disassembler. Patch from Joe Abbey. 
llvm-svn: 141162
 2011-10-05 03:29:32 +00:00
Owen Anderson
e255773f3d Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment. 
llvm-svn: 141135
 2011-10-04 23:26:17 +00:00
Craig Topper
9d32602cfd Add support in the disassembler for ignoring the L-bit on certain VEX instructions. Mark instructions that have this behavior. Fixes PR10676. 
llvm-svn: 141065
 2011-10-04 06:30:42 +00:00
Craig Topper
df04bee9b2 Add support for MOVBE and RDRAND instructions for the assembler and disassembler. Includes feature flag checking, but no instrinsic support. Fixes PR10832, PR11026 and PR11027. 
llvm-svn: 141007
 2011-10-03 17:28:23 +00:00
Craig Topper
4456c94f70 Treat VEX.vvvv as a 3-bit field outside of 64-bit mode. Prevents access to registers xmm8-xmm15 outside 64-bit mode. 
llvm-svn: 140997
 2011-10-03 08:14:29 +00:00
Craig Topper
7a5eafab6c Fix VEX disassembling to ignore REX.RXBW bits in 32-bit mode. 
llvm-svn: 140993
 2011-10-03 07:51:09 +00:00
Craig Topper
f776e3b410 Fix some Intel syntax disassembly issues with instructions that implicitly use AL/AX/EAX/RAX such as ADD/SUB/ADC/SUBB/XOR/OR/AND/CMP/MOV/TEST. 
llvm-svn: 140974
 2011-10-02 21:08:12 +00:00
Craig Topper
5c8feca34f Special case disassembler handling of REX.B prefix on NOP instruction to decode as XCHG R8D, EAX instead. Fixes PR10344. 
llvm-svn: 140971
 2011-10-02 16:56:09 +00:00
Craig Topper
43fd621df8 Fix disassembling of INVEPT and INVVPID to take operands 
llvm-svn: 140955
 2011-10-01 21:20:14 +00:00
Craig Topper
99ad3cc23e Fix disassembler handling of CRC32 which is an odd instruction that uses 0xf2 as an opcode extension and allows the opsize prefix. This necessitated adding IC_XD_OPSIZE and IC_64BIT_XD_OPSIZE contexts. Unfortunately, this increases the size of the disassembler tables. Fixes PR10702. 
llvm-svn: 140954
 2011-10-01 19:54:56 +00:00
Jakob Stoklund Olesen
010e9bb778 Store sub-class lists as a bit vector. 
This uses less memory and it reduces the complexity of sub-class
operations:

- hasSubClassEq() and friends become O(1) instead of O(N).

- getCommonSubClass() becomes O(N) instead of O(N^2).

In the future, TableGen will infer register classes.  This makes it
cheap to add them.

llvm-svn: 140898
 2011-09-30 22:19:07 +00:00
Jakob Stoklund Olesen
76da38e8e8 Expand the x86 V_SET0* pseudos right after register allocation. 
This also makes it possible to reduce the number of pseudo instructions
and get rid of the encoding information.

llvm-svn: 140776
 2011-09-29 05:10:54 +00:00
Eli Friedman
81fc13efd2 PR11033: Make sure we don't generate PCMPGTQ and PCMPEQQ if the target CPU does not support them. 
llvm-svn: 140723
 2011-09-28 21:00:25 +00:00
Jakob Stoklund Olesen
bbe41f6be8 Rename SSEDomainFix -> lib/CodeGen/ExecutionDepsFix. 
I'll clean up the source in the next commit.

llvm-svn: 140663
 2011-09-28 00:01:54 +00:00
Jakob Stoklund Olesen
2bf243f464 Remove X86-dependent stuff from SSEDomainFix. 
This also enables domain swizzling for AVX code which required a few
trivial test changes.

The pass will be moved to lib/CodeGen shortly.

llvm-svn: 140659
 2011-09-27 23:50:46 +00:00
Jakob Stoklund Olesen
b843221bf0 Promote the X86 Get/SetSSEDomain functions to TargetInstrInfo. 
I am going to unify the SSEDomainFix and NEONMoveFix passes into a
single target independent pass.  They are essentially doing the same
thing.

llvm-svn: 140652
 2011-09-27 22:57:18 +00:00
Craig Topper
a08173e534 Fix VEX decoding in i386 mode. Fixes PR11008. 
llvm-svn: 140515
 2011-09-26 05:12:43 +00:00
Jakob Stoklund Olesen
59b2982dcf Only run MF.verify() with EXPENSIVE_CHECKS=1. 
llvm-svn: 140441
 2011-09-24 01:11:19 +00:00
Duncan Sands
6d3fe8d11a Implement Chris's suggestion of legalizing the various SSE and AVX 
hadd/hsub intrinsics into the new fhadd/fhsub X86 node.

llvm-svn: 140383
 2011-09-23 16:10:22 +00:00
Eli Friedman
31c7bde95a PR10991: make fast-isel correctly check whether accessing a global through an alias involves thread-local storage. (I'm not entirely sure how this is supposed to work, but this patch makes fast-isel consistent with the normal isel path.) 
llvm-svn: 140355
 2011-09-22 23:41:28 +00:00
Jakob Stoklund Olesen
a608b612f1 Add support for GR32 <-> FR32 cross class copies. 
We already support GR64 <-> VR128 copies.  All of these copies break
partial register dependencies by zeroing the high part of the target
register.

llvm-svn: 140348
 2011-09-22 22:45:24 +00:00
Duncan Sands
1da590b589 Synthesize SSE3/AVX 128 bit horizontal add/sub instructions from 
floating point add/sub of appropriate shuffle vectors.  Does not
synthesize the 256 bit AVX versions because they work differently.

llvm-svn: 140332
 2011-09-22 20:15:48 +00:00
Craig Topper
95f048d1ff Fix register printing in disassembling of push/pop of segment registers and in/out in Intel syntax mode. Fixes PR10960 
llvm-svn: 140299
 2011-09-22 07:01:50 +00:00
Benjamin Kramer
978ef840ac The SSE version differences for fmin/fmax are more involved than I thought. 
- x87: no min or max.
- SSE1: min/max for single precision scalars and vectors.
- SSE2: min/max for single and double precision scalars and vectors.
- AVX: as SSE2, but also supports the wider ymm vectors. (this is covered by the isTypeLegal check)

llvm-svn: 140296
 2011-09-22 03:27:22 +00:00
Benjamin Kramer
5844bacf0a X86: Don't form min/max nodes if the target is missing SSE. 
llvm-svn: 140294
 2011-09-22 03:01:42 +00:00
Benjamin Kramer
8b12bfc4ec X86Disassembler: if verbose logging is going to nulls(), disable logging completely. 
Otherwise we'll spend a ridiculous amount of time pretty printing debug output and then discarding it.

llvm-svn: 140276
 2011-09-21 21:47:35 +00:00
Nadav Rotem
71bd67ac2e fix comment 
llvm-svn: 140258
 2011-09-21 17:14:40 +00:00
Nadav Rotem
8fc9d777a3 Insert a sanity check on the combining of x86 truncing-store nodes. This comes to replace the problematic check that was removed in r139995. 
llvm-svn: 140246
 2011-09-21 08:45:10 +00:00
Richard Trieu
a675de9fac Change: 
assert(!"error message");

To:

  assert(0 && "error message");

which is more consistant across the code base.

llvm-svn: 140234
 2011-09-21 03:09:09 +00:00
Owen Anderson
fbec62c99e In the disassembler C API, be careful not to confuse the comment streamer that the disassembler outputs annotations on with the streamer that the InstPrinter will print them on. 
llvm-svn: 140217
 2011-09-21 00:25:23 +00:00
Bruno Cardoso Lopes
629e7c2410 Revert r140097, working on a better approach 
llvm-svn: 140203
 2011-09-20 23:19:29 +00:00
Bruno Cardoso Lopes
035414367a Simplify max/minp[s|d] dagcombine matching 
llvm-svn: 140199
 2011-09-20 22:34:45 +00:00
Bruno Cardoso Lopes
b3eab8c22d Tidy up a bit more, fix tab and remove trailing whitespaces 
llvm-svn: 140186
 2011-09-20 21:45:26 +00:00
Bruno Cardoso Lopes
906f64c461 The wrong relocation was being emitted for several SSSE3 instructions. 
This fixes PR10963. Thanks to Benjamin for finding the wrong tablegen
declaration.

llvm-svn: 140184
 2011-09-20 21:39:21 +00:00
Bruno Cardoso Lopes
dab989502d Tidy up code! 
llvm-svn: 140183
 2011-09-20 21:39:06 +00:00
Craig Topper
df17f1cc99 Extend changes from r139986 to produce 256-bit AVX minps/minpd/maxps/maxpd. 
llvm-svn: 140140
 2011-09-20 07:38:59 +00:00