c70355195c
Rewrite fast-isel integer cast handling to handle more cases, and to be simpler and more consistent.
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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
4105ed1523
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.
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llvm-svn: 130560
2011-04-29 23:34:52 +00:00
328bad02fa
Switch to ImmLeaf (which can be used by FastISel) for a few more common ARM/Thumb2 patterns.
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llvm-svn: 130552
2011-04-29 22:48:03 +00:00
8d46b47787
Add trunc->branch support, this won't help with clang's i8->i1 truncations
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for bools, but is a start.
llvm-svn: 130534
2011-04-29 20:02:39 +00:00
964943780b
Recommit this change and remove the failing part of the test - it didn't
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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
a08ccc8cb9
This should be still failing, but is. Disable it with the
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forget-me-stick for now.
llvm-svn: 118950
2010-11-13 00:25:06 +00:00
7b92c2a9a0
Revert r116220 - thus turning arm fast isel back on by default.
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llvm-svn: 116762
2010-10-18 22:53:53 +00:00
e2a0b6841a
Found a bug turning this on by default. Disable again for now.
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llvm-svn: 116220
2010-10-11 20:26:21 +00:00
6002b3b3e1
Remove now non-existent option.
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llvm-svn: 116219
2010-10-11 20:21:21 +00:00
c237a849e3
Re-apply r113679, which was reverted in r113720, which added a paid of new instcombine transforms
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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
26abd3e0c2
Revert 113679, it was causing an infinite loop in a testcase that I've sent
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on to Owen.
llvm-svn: 113720
2010-09-12 06:09:23 +00:00
ca2ec95154
Remove ssp from this test.
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llvm-svn: 113392
2010-09-08 19:32:34 +00:00
6b1533a1a9
Add another basic test cribbed from the x86 fast-isel tests.
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llvm-svn: 112036
2010-08-25 07:57:29 +00:00
37d547aee6
Run this on thumb and arm.
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llvm-svn: 112035
2010-08-25 07:53:15 +00:00
e58c03698e
Make this testcase actually executed with fast-isel on arm.
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llvm-svn: 112033
2010-08-25 07:47:00 +00:00
84bdfd80df
Baby steps towards ARM fast-isel.
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llvm-svn: 109047
2010-07-21 22:26:11 +00:00
Eli Friedman