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402 Commits

Author SHA1 Message Date
Chad Rosier
a486f44733 Add a TODO comment. FastISel works by parsing each basic block from the bottom 
up.  Thus, improving the support for compares is goodness because it increases
the number of terminator instructions we can handle.  This creates many more 
opportunities for target specific fast-isel.

llvm-svn: 143079
 2011-10-26 23:34:37 +00:00
Chad Rosier
78127d31f3 Factor a little more code into EmitCmp, which should have been done in the first 
place.  No functional change intended.

llvm-svn: 143078
 2011-10-26 23:25:44 +00:00
Chad Rosier
eafbf3faa9 Use EmitCmp in SelectBranch. No functional change intended. 
llvm-svn: 143076
 2011-10-26 23:17:28 +00:00
Chad Rosier
59a201950b Factor out an EmitCmp function that can be used by both SelectCmp and 
SelectBranch.  No functional change intended.

llvm-svn: 143072
 2011-10-26 22:47:55 +00:00
Chad Rosier
b522550ce5 Add a few FIXME comments. 
llvm-svn: 142299
 2011-10-17 22:54:23 +00:00
Bill Wendling
7753d66468 Switch over to using ARMConstantPoolConstant for global variables, functions, 
and block addresses.

llvm-svn: 140936
 2011-10-01 08:00:54 +00:00
Jim Grosbach
efc761a1eb ARM fix encoding of VMOV.f32 and VMOV.f64 immediates. 
Encode the immediate into its 8-bit form as part of isel rather than later,
which simplifies things for mapping the encoding bits, allows the removal
of the custom disassembler decoding hook, makes the operand printer trivial,
and prepares things more cleanly for handling these in the asm parser.

rdar://10211428

llvm-svn: 140834
 2011-09-30 00:50:06 +00:00
Jim Grosbach
e7e2aca322 Tidy up a few 80 column violations. 
llvm-svn: 139636
 2011-09-13 20:30:37 +00:00
Eli Friedman
f3dd6da7a8 Don't fast-isel for atomic load/store; some cases require extra handling missing from fast-isel. 
llvm-svn: 139044
 2011-09-02 22:33:24 +00:00
Chad Rosier
17847ae757 Fixup for functions that return a bool. 
llvm-svn: 138918
 2011-08-31 23:49:05 +00:00
Jim Grosbach
50b0f6669c [SU]XT[BH] are only available on ARMv6 and up. 
llvm-svn: 138373
 2011-08-23 20:53:08 +00:00
Jim Grosbach
8b31ef50c0 ARM extend instructions simplification. 
Refactor the SXTB, SXTH, SXTB16, UXTB, UXTH, and UXTB16 instructions to not
have an 'r' and an 'r_rot' version, but just a single version with a rotate
that can be zero. Use plain Pat<>'s for the ISel of the non-rotated version.

llvm-svn: 136225
 2011-07-27 16:47:19 +00:00
Evan Cheng
a20cde31e7 Sink ARMMCExpr and ARMAddressingModes into MC layer. First step to separate ARM MC code from target. 
llvm-svn: 135636
 2011-07-20 23:34:39 +00:00
Chris Lattner
229907cd11 land David Blaikie's patch to de-constify Type, with a few tweaks. 
llvm-svn: 135375
 2011-07-18 04:54:35 +00:00
Evan Cheng
194c3dc01f Move CallFrameSetupOpcode and CallFrameDestroyOpcode to TargetInstrInfo. 
llvm-svn: 134030
 2011-06-28 21:14:33 +00:00
Evan Cheng
6cc775f905 - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo and 
sink them into MC layer.
- Added MCInstrInfo, which captures the tablegen generated static data. Chang
TargetInstrInfo so it's based off MCInstrInfo.

llvm-svn: 134021
 2011-06-28 19:10:37 +00:00
Eric Christopher
0713a9d8fc Add a parameter to CCState so that it can access the MachineFunction. 
No functional change.

Part of PR6965

llvm-svn: 132763
 2011-06-08 23:55:35 +00:00
Eli Friedman
86585798af Add ARM fast-isel support for materializing the address of a global in cases where the global uses an indirect symbol. 
rdar://9431157

llvm-svn: 132522
 2011-06-03 01:13:19 +00:00
Cameron Zwarich
6528a54946 Fix ARM fast isel to correctly flag memory operands to stores. This fixes 
-verify-machineinstrs failures on several tests.

llvm-svn: 132268
 2011-05-28 20:34:49 +00:00
Eli Friedman
fe84bd659c Fix a silly mistake (which trips over an assertion) in r132099. rdar://9515076 
llvm-svn: 132194
 2011-05-27 18:02:04 +00:00
Eli Friedman
c70355195c Rewrite fast-isel integer cast handling to handle more cases, and to be simpler and more consistent. 
The practical effects here are that x86-64 fast-isel can now handle trunc from i8 to i1, and ARM fast-isel can handle many more constructs involving integers narrower than 32 bits (including loads, stores, and many integer casts).

rdar://9437928 .

llvm-svn: 132099
 2011-05-25 23:49:02 +00:00
Eli Friedman
5bbb75655b Prepare ARMFastISel::SelectSIToFP for getRegForValue returning registers for i8 and i16 values. 
llvm-svn: 132073
 2011-05-25 19:09:45 +00:00
Jim Grosbach
4e983166bc Kill some dead code. 
llvm-svn: 131431
 2011-05-16 22:24:07 +00:00
Eric Christopher
39b56b4b9f Apparently the check for direct calls is unnecessary. 
llvm-svn: 130716
 2011-05-02 20:16:33 +00:00
Eli Friedman
328bad02fa Switch to ImmLeaf (which can be used by FastISel) for a few more common ARM/Thumb2 patterns. 
llvm-svn: 130552
 2011-04-29 22:48:03 +00:00
Eric Christopher
7708746c33 Add FastEmitInst_ii for the arm fast isel generator. It doesn't use it, but 
if it ever did it needs the def machinery.

llvm-svn: 130549
 2011-04-29 22:07:50 +00:00
Eric Christopher
26b8ac4b8c Some cleanup and optimize fallthrough more. 
llvm-svn: 130546
 2011-04-29 21:56:31 +00:00
Eli Friedman
86caced370 Re-committing r130454, which does not in fact break anything. 
Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register.
rdar://problem/9338332 .

llvm-svn: 130539
 2011-04-29 21:22:56 +00:00
Eric Christopher
8d46b47787 Add trunc->branch support, this won't help with clang's i8->i1 truncations 
for bools, but is a start.

llvm-svn: 130534
 2011-04-29 20:02:39 +00:00
Eric Christopher
9ade5e2495 Update comments and checks to match reality. 
llvm-svn: 130464
 2011-04-29 00:07:20 +00:00
Eric Christopher
501d2e2c14 Whitespace. 
llvm-svn: 130463
 2011-04-29 00:03:10 +00:00
Eli Friedman
517728b1ae Revert r130454; apparently this doesn't actually work. 
llvm-svn: 130462
 2011-04-28 23:55:14 +00:00
Eli Friedman
e4ecd42926 Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register. 
rdar://problem/9338332 .

llvm-svn: 130454
 2011-04-28 23:03:25 +00:00
Eric Christopher
4f012fd0a1 Be more layout aware here and swap the successor and branch condition 
if it means we get a fallthrough.

llvm-svn: 130404
 2011-04-28 16:52:09 +00:00
Stuart Hastings
ebddfe60a0 Correct result when a branch condition is live across a block 
boundary.  <rdar://problem/8933028>

llvm-svn: 129634
 2011-04-16 03:31:26 +00:00
Jay Foad
7c14a558fe Don't include Operator.h from InstrTypes.h. 
llvm-svn: 129271
 2011-04-11 09:35:34 +00:00
Eric Christopher
b968f4defe Just use BL all the time. It's safer that way. 
Fixes rdar://9184526

llvm-svn: 128869
 2011-04-05 00:39:26 +00:00
Cameron Zwarich
53dd03d537 Add a ARM-specific SD node for VBSL so that forms with a constant first operand 
can be recognized. This fixes <rdar://problem/9183078>.

llvm-svn: 128584
 2011-03-30 23:01:21 +00:00
Eric Christopher
a5a779ef45 Migrate the fix in r128041 to ARM's fastisel support as well. 
Fixes rdar://9169640 

llvm-svn: 128100
 2011-03-22 19:39:17 +00:00
Eric Christopher
174d872702 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

llvm-svn: 127518
 2011-03-12 01:09:29 +00:00
Eric Christopher
919772fd5d Only use blx for external function calls on thumb, these could be fixed 
up by the dynamic linker, but it's better to use the correct instruction
to begin with.

Fixes rdar://9011034

llvm-svn: 126176
 2011-02-22 01:37:10 +00:00
Eric Christopher
331cc5218d Use the incoming VT not the VT of where we're trying to store to determine 
if we can store a value. Also, the exclusion is or, not and.

Fixes rdar://8920247.

llvm-svn: 124357
 2011-01-27 05:44:56 +00:00
Jeffrey Yasskin
249fcd4499 Remove unused variables found by gcc-4.6's -Wunused-but-set-variable. 
llvm-svn: 123707
 2011-01-18 00:51:23 +00:00
Evan Cheng
dfce83c8f5 Materialize GA addresses with movw + movt pairs for Darwin in PIC mode. e.g. 
movw    r0, :lower16:(L_foo$non_lazy_ptr-(LPC0_0+4))
        movt    r0, :upper16:(L_foo$non_lazy_ptr-(LPC0_0+4))
LPC0_0:
        add     r0, pc, r0

It's not yet enabled by default as some tests are failing. I suspect bugs in
down stream tools.

llvm-svn: 123619
 2011-01-17 08:03:18 +00:00
Chris Lattner
1b3f5b9f74 fix some -Wself-assign warnings. 
llvm-svn: 122893
 2011-01-05 18:41:05 +00:00
Eric Christopher
c874f6c9ff Arm and thumb call instructions are also in different orders. 
Fixes rdar://8782223

llvm-svn: 122313
 2010-12-21 03:50:43 +00:00
Eric Christopher
347f4c32e8 Don't handle -arm-long-calls in fast isel for now. 
llvm-svn: 121919
 2010-12-15 23:47:29 +00:00
Eric Christopher
119ff7ff04 Refactor load/store handling again. Simplify and make some room for 
reg+reg handling.

llvm-svn: 120526
 2010-12-01 01:40:24 +00:00
Eric Christopher
78b4efb472 Noticed this on inspection, fix and update some comments. 
llvm-svn: 120447
 2010-11-30 19:14:07 +00:00
Eric Christopher
43b0c6d94f Update fastisel for the changes in r120272. 
llvm-svn: 120324
 2010-11-29 21:56:23 +00:00