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311 Commits

Author SHA1 Message Date
Chris Lattner
709d829d3c more minor refactoring of X86SelectBranch, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57547 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-15 04:02:26 +00:00
Chris Lattner
871d246fd4 factor buildmi calls in X86SelectBranch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57546 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-15 03:58:05 +00:00
Chris Lattner
8aeeeb9d24 factor some more BuildMI's in X86SelectCmp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57545 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-15 03:52:54 +00:00
Chris Lattner
54aebde0be factor some BuildMI calls, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57544 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-15 03:47:17 +00:00
Dan Gohman
dd5b58ad7b FastISel support for exception-handling constructs. 
- Move the EH landing-pad code and adjust it so that it works
   with FastISel as well as with SDISel.
 - Add FastISel support for @llvm.eh.exception and
   @llvm.eh.selector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57539 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-14 23:54:11 +00:00
Dan Gohman
8c3f8b6dea Add MBB successors and physreg Uses in the same order that 
SDISel typically adds them in. This makes it a little easier
to compare FastISel output with SDISel output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57266 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-07 22:10:33 +00:00
Dan Gohman
145b828014 Instead of emitting an implicit use for the super-register of 
X86::CL that was used, emit an EXTRACT_SUBREG from the CL
super-register to CL. This more precisely describes how the
CL register is being used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57264 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-07 21:50:36 +00:00
Dan Gohman
4e6ed5eefd Fix X86FastISel to handle dynamic allocas that have avoided 
getting inserted into the ValueMap. This avoids infinite
recursion in some rare cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56989 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-03 01:27:49 +00:00
Dan Gohman
d98d6203e4 Optimize conditional branches in X86FastISel. This replaces 
sequences like this:
       sete    %al
       testb   %al, %al
       jne     LBB11_1
with this:
       je      LBB11_1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-02 22:15:21 +00:00
Dan Gohman
5bbee4b40a Work around an interaction between fast-isel and regalloc=local. The 
local register allocator's physreg liveness doesn't recognize subregs,
so it doesn't know that defs of %ecx that are immediately followed by
uses of %cl aren't dead. This comes up due to the way fast-isel emits
shift instructions.

This is a temporary workaround. Arguably, local regalloc should
handle subreg references correctly. On the other hand, perhaps
fast-isel should use INSERT_SUBREG instead of just assigning to the
most convenient super-register of %cl when lowering shifts.

This fixes MultiSource/Benchmarks/MallocBench/espresso,
MultiSource/Applications/hexxagon, and others, under -fast.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56947 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-02 14:56:12 +00:00
Dan Gohman
6d4b052579 Split x86's ADJCALLSTACK instructions into 32-bit and 64-bit forms. 
This allows the 64-bit forms to use+def RSP instead of ESP. This
doesn't fix any real bugs today, but it is more precise and it
makes the debug dumps on x86-64 look more consistent.

Also, add some comments describing the CALL instructions' physreg
operand uses and defs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56925 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-01 18:28:06 +00:00
Dan Gohman
5396c99baa Fix X86FastISel's output for x86-32 PIC constant pool addresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56829 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 01:21:32 +00:00
Dan Gohman
57c3dac0df Move the GlobalBaseReg field out of X86ISelDAGToDAG.cpp 
and X86FastISel.cpp into X86MachineFunction.h, so that it
can be shared, instead of having each selector keep track
of its own.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56825 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 00:58:23 +00:00
Dan Gohman
9b66d73bb1 Disable all x87 usage, including f32 and f64 when the subtarget 
doesn't have SSE(2), with X86FastISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56823 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-30 00:48:39 +00:00
Dan Gohman
7962e856d1 Fix an over-pessimization about GlobalVariable addresses in X86FastISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56802 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-29 21:13:15 +00:00
Dan Gohman
09aae469ce Fix X86FastISel's address folding to check displacement 
values for overflow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56686 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-26 20:04:15 +00:00
Dan Gohman
97135e1ee5 Factor out the code for determining when symblic addresses 
require RIP-relative addressing and use it to fix a bug
in X86FastISel in x86-64 PIC mode, where it was trying to
use base/index registers with RIP-relative addresses. This
fixes a bunch of x86-64 testsuite failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56676 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-26 19:15:30 +00:00
Dan Gohman
5af29c2e57 Disable support for x86_f80 in X86FastISel. Supporting it would 
require more work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56637 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-26 01:39:32 +00:00
Dan Gohman
789ce77c6a Fix a bug in which address displacements were being added to the 
load from the stub, instead of the result of the load from the stub.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56626 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-25 23:34:02 +00:00
Devang Patel
0598866c05 Large mechanical patch. 
s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56622 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-25 21:00:45 +00:00
Dan Gohman
2cc3aa4459 PIC support in X86FastISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-25 15:24:26 +00:00
Dan Gohman
d57dd5f4e6 Arrange for FastISel code to have access to the MachineModuleInfo 
object. This will be needed to support debug info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-23 21:53:34 +00:00
Arnold Schwaighofer
290ae0398e Change the calling convention used when tail call optimization is enabled from CC_X86_32_TailCall to CC_X86_32_FastCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56436 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-22 14:50:07 +00:00
Chris Lattner
743922ea75 Fold immediates into X86 shifts with fast isel. This generates: 
sarl    $3, %ecx

instead of:

movl    $3, %ecx
sarl    %cl, %edx

This shrinks fast isel 176.gcc by about 2000 instructions (.3%)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56413 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-21 21:44:29 +00:00
Dan Gohman
7e8ef60e3c Fix a FastISel GlobalVariable CSE bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56376 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-19 23:42:04 +00:00
Dan Gohman
2ff7fd1461 Refactor X86SelectConstAddr, folding it into X86SelectAddress. This 
results in better code for globals. Also, unbreak the local CSE for
GlobalValue stub loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56371 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-19 22:16:54 +00:00
Dan Gohman
3589308f37 Address-mode folding for X86FastISel. It's pretty basic, but it 
catches a fair number of common cases. Note that this currently
causes Fast-ISel to leave behind lots of dead instructions.
Those will be dealt with in subsequent commits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56320 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 23:23:44 +00:00
Dan Gohman
1fbc3cd674 Simplify this code. The FastISel class has its own TD member. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56311 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 18:26:43 +00:00
Dan Gohman
b5b6ec6488 FastISel: For calls, prefer using the callee's address as a constant 
over having it in a register. And wait until after checking type
legality before requesting that the callee address be placed in a
register. Also, fix support for calls with void return type.

This speeds up fast-isel isel time by about 15% and reduces
instruction counts by about 3% overall on certain testcases. It also
changes many indirect calls to direct calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56292 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-17 21:18:49 +00:00
Owen Anderson
ac34a00fe0 Fix a bug in ANY_EXTEND handling that was breaking 403.gcc on X86-64 in fast isel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56117 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 19:44:55 +00:00
Owen Anderson
b63691350d If ISD::ANY_EXTEND fails, try ISD::ZERO_EXTEND and ISD::SIGN_EXTEND before giving up. This fixes 445.gobmk on 
X86-64 in fast isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56088 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 02:41:37 +00:00
Dan Gohman
78efce6155 X86FastISel support for double->float and float->double casts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56070 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-10 21:02:08 +00:00
Dan Gohman
0586d91bb3 Add X86FastISel support for static allocas, and refences 
to static allocas. As part of this change, refactor the
address mode code for laods and stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56066 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-10 20:11:02 +00:00
Evan Cheng
59fbc80f6b Fix a constant lowering bug. Now we can do load and store instructions with funky getelementptr embedded in the address operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55975 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 01:26:59 +00:00
Evan Cheng
debdea0a66 Handle calls which produce i1 results: promote to i8 but and it with 1 to get the low bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55925 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 17:15:42 +00:00
Dan Gohman
863890e2fa Fix copy+pastos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55918 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 16:31:35 +00:00
Evan Cheng
24e3a90904 Add support to extend call operands when needed. Enable x86 fastisel call support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55891 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 06:35:17 +00:00
Evan Cheng
f3d4efe30c Initial fastisel call support for C, Fast, and X86_FastCall calling conventions. It's meant to handle "simple" calls, i.e. no byval, structret, etc. It doesn't support multi-result returns either. 
Not yet turned on, it needs to support sext / zext of arguments and result.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55882 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-07 09:09:33 +00:00
Evan Cheng
10a8d9c737 Handle x86 truncate to i8 with target hook for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55877 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-07 08:47:42 +00:00
Owen Anderson
3b217c6f5c Fix constant pool loads, and remove broken versions of addConstantPoolReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55868 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-06 01:11:01 +00:00
Dan Gohman
f58cb6d224 Fix X86FastISel's shift and select code to reject illegal types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55857 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 21:27:34 +00:00
Dan Gohman
31d26912cc Fix the opcodes used by X86FastISel for shifts and conditional moves. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55855 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 21:13:04 +00:00
Evan Cheng
0de588fd89 Factor out code that emits load and store instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55854 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 21:00:03 +00:00
Owen Anderson
9c7216f984 Rename method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55853 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 20:49:33 +00:00
Dan Gohman
c39f4dba1c X86FastISel support for shifts and conditional moves. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55844 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 18:30:08 +00:00
Dan Gohman
4f22bb0676 Check a comparion's operand type for legality before 
expanding its operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55820 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 01:33:56 +00:00
Dan Gohman
f52550b50e Fix X86FastISel code for comparisons and conditional branches 
to check the result of getRegForValue before using it, and
to check for illegal operand types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55819 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 01:15:35 +00:00
Dan Gohman
d89ae99ec8 X86FastISel support for conditional branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55816 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 01:06:14 +00:00
Owen Anderson
95267a1e67 Add initial support for selecting constant materializations that require constant 
pool loads on X86 in fast isel.  This isn't actually used yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55814 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 00:06:23 +00:00
Dan Gohman
6e3f05f5ce X86FastISel support for ICmpInst and FCmpInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55811 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 23:26:51 +00:00