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26 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
71f92061aa Use getRegForValue() to materialize the address of ARM globals. 
This enables basic local CSE, giving us 20% smaller code for
consumer-typeset in -O0 builds.

<rdar://problem/10658692>

llvm-svn: 147720
 2012-01-07 04:07:22 +00:00
Jakob Stoklund Olesen
536b4e24d8 Use movw+movt in ARMFastISel::ARMMaterializeGV. 
This eliminates a lot of constant pool entries for -O0 builds of code
with many global variable accesses.

This speeds up -O0 codegen of consumer-typeset by 2x because the
constant island pass no longer has to look at thousands of constant pool
entries.

<rdar://problem/10629774>

llvm-svn: 147712
 2012-01-07 01:47:05 +00:00
Evan Cheng
46b085721a ARM target code clean up. Check for iOS, not Darwin where it makes sense. 
llvm-svn: 146981
 2011-12-20 18:26:50 +00:00
Chad Rosier
33f40b2c25 Add newline at EOF. 
llvm-svn: 146538
 2011-12-14 01:34:39 +00:00
Chad Rosier
8af97606a9 [fast-isel] Unaligned loads of floats are not supported. Therefore, convert to a regular 
load and then move the result from a GPR to a FPR.

llvm-svn: 146502
 2011-12-13 19:22:14 +00:00
Chad Rosier
70dd1f98af [arm-fast-isel] Doublewords only require word-alignment. 
rdar://10528060

llvm-svn: 145891
 2011-12-06 01:44:17 +00:00
Chad Rosier
d1968c9ed6 [arm-fast-isel] Unaligned stores of floats require special care. 
rdar://10510150

llvm-svn: 145742
 2011-12-03 02:21:57 +00:00
Jim Grosbach
44047da675 ARM Darwin default relocation model is PIC. 
This matches clang, so default options in llc and friends are now closer to
clang's defaults.

llvm-svn: 140863
 2011-09-30 17:41:35 +00:00
Jim Grosbach
93f2ebb5e7 Simplify printing of ARM shifted immediates. 
Print shifted immediate values directly rather than as a payload+shifter
value pair. This makes for more readable output assembly code, simplifies
the instruction printer, and is consistent with how Thumb immediates are
 displayed.

llvm-svn: 134902
 2011-07-11 16:48:36 +00:00
Eli Friedman
eae10d6163 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
Eli Friedman
93ffb875ad 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
919bf1ca71 Make FastEmit_ri_ try a bit harder to succeed for supported operations; FastEmit_i can fail for non-Thumb2 ARM. Makes ARMSimplifyAddress work correctly, and reduces the number of fast-isel bailouts on non-Thumb ARM. 
llvm-svn: 130560
 2011-04-29 23:34:52 +00:00
Eli Friedman
1940912660 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
ba0cef1b0b 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
22b01f0d76 Recommit this change and remove the failing part of the test - it didn't 
pass in the first place and was masked by earlier failures not warning
and aborting the block.

llvm-svn: 119184
 2010-11-15 21:11:06 +00:00
Eric Christopher
ba758d0df4 This should be still failing, but is. Disable it with the 
forget-me-stick for now.

llvm-svn: 118950
 2010-11-13 00:25:06 +00:00
Eric Christopher
5850afe5f2 Revert r116220 - thus turning arm fast isel back on by default. 
llvm-svn: 116762
 2010-10-18 22:53:53 +00:00
Eric Christopher
fa961e31b1 Found a bug turning this on by default. Disable again for now. 
llvm-svn: 116220
 2010-10-11 20:26:21 +00:00
Eric Christopher
b477aa7c6f Remove now non-existent option. 
llvm-svn: 116219
 2010-10-11 20:21:21 +00:00
Owen Anderson
9c34a7831d Re-apply r113679, which was reverted in r113720, which added a paid of new instcombine transforms 
to expose greater opportunities for store narrowing in codegen.  This patch fixes a potential
infinite loop in instcombine caused by one of the introduced transforms being overly aggressive.

llvm-svn: 113763
 2010-09-13 17:59:27 +00:00
Eric Christopher
d4aaabfa74 Revert 113679, it was causing an infinite loop in a testcase that I've sent 
on to Owen.

llvm-svn: 113720
 2010-09-12 06:09:23 +00:00
Eric Christopher
95fe7f6d38 Remove ssp from this test. 
llvm-svn: 113392
 2010-09-08 19:32:34 +00:00
Eric Christopher
f9155e9642 Add another basic test cribbed from the x86 fast-isel tests. 
llvm-svn: 112036
 2010-08-25 07:57:29 +00:00
Eric Christopher
0dddfc66d6 Run this on thumb and arm. 
llvm-svn: 112035
 2010-08-25 07:53:15 +00:00
Eric Christopher
1645ee458a Make this testcase actually executed with fast-isel on arm. 
llvm-svn: 112033
 2010-08-25 07:47:00 +00:00
Eric Christopher
3d118d5e8a Baby steps towards ARM fast-isel. 
llvm-svn: 109047
 2010-07-21 22:26:11 +00:00