97c1343c45
ARM: Add a pack pattern for matching arithmetic shift right
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llvm-svn: 185714
2013-07-05 18:57:49 +00:00
50b76b5226
ARM: Fix incorrect pack pattern
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A "pkhtb x, x, y asr #num" uses the lower 16 bits of "y asr #num" and packs them
in the bottom half of "x". An arithmetic and logic shift are only equivalent in
this context if the shift amount is 16. We would be shifting in ones into the
bottom 16bits instead of zeros if "y" is negative.
radar://14338767
llvm-svn: 185712
2013-07-05 18:28:39 +00:00
3565b0a2e2
Remove duplicate test.
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llvm-svn: 117158
2010-10-22 22:04:28 +00:00
6d993fa1a6
tidy up.
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llvm-svn: 117157
2010-10-22 22:01:56 +00:00
942b10f511
Change ARM PKHTB and PKHBT instructions to use a shift_imm operand to avoid
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printing "lsl #0". This fixes the remaining parts of pr7792. Make
corresponding changes for encoding/decoding these instructions.
llvm-svn: 111251
2010-08-17 17:23:19 +00:00
804f6159f1
Generalize a pattern for PKHTB: an SRL of 16-31 bits will guarantee
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that the high halfword is zero. The shift need not be exactly 16 bits.
llvm-svn: 111196
2010-08-16 22:26:55 +00:00
8f553757c4
Convert a test to use FileCheck.
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llvm-svn: 111153
2010-08-16 17:05:27 +00:00
c8054d90fb
Eliminate more uses of llvm-as and llvm-dis.
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llvm-svn: 81293
2009-09-09 00:09:15 +00:00
f697c03883
Remove llvm-upgrade.
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llvm-svn: 47238
2008-02-17 20:02:20 +00:00
f9dd170e36
Convert tests using "| wc -l | grep ..." to use the count script.
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llvm-svn: 41097
2007-08-15 13:36:28 +00:00
6e87ec4351
For PR1319:
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Remove && from the end of the lines to prevent tests from throwing run
lines into the background. Also, clean up places where the same command
is run multiple times by using a temporary file.
llvm-svn: 36142
2007-04-16 17:36:08 +00:00
b5dc70c270
For PR1319: Upgrade to use new test harness
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llvm-svn: 36076
2007-04-15 19:11:47 +00:00
a5007faaa6
ARM test cases contributed by Apple.
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llvm-svn: 33354
2007-01-19 09:20:23 +00:00
Arnold Schwaighofer