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| author | Roger Sayle <roger@eyesopen.com> | 2004-04-09 21:39:14 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2004-04-09 21:39:14 +0000 |
| commit | 0b24db885b67a354b09746a9af49a5b4333cc249 (patch) | |
| tree | 48b3dead6c152c128f09b4ca6fa75231cacb39d9 /libjava/testsuite/libjava.lang/SyncTest.java | |
| parent | ce58118c3d596e5732e17cbca57b6e7518b50d70 (diff) | |
| download | gcc-0b24db885b67a354b09746a9af49a5b4333cc249.zip gcc-0b24db885b67a354b09746a9af49a5b4333cc249.tar.gz gcc-0b24db885b67a354b09746a9af49a5b4333cc249.tar.bz2 | |
simplify-rtx.c (mode_signbit_p): New function to check whether an RTX is an immediate constant that represents...
* simplify-rtx.c (mode_signbit_p): New function to check whether
an RTX is an immediate constant that represents the most significant
bit of a given machine mode.
(simplify_unary_operation) <NOT>: Optimize ~(X+C) as X ^ ~C, where
C is the sign bit.
(simplify_binary_operation) <PLUS>: Optimize (X^C1) + C2 as X^(C1^C2)
when C2 is the sign bit.
(simplify_binary_operation) <XOR>: Canonicalize X^C as X+C when C
is the sign bit. Optimize (X+C1) ^ C2 as X^(C1^C2) when C1 is the
sign bit.
* gcc.c-torture/execute/20040409-1.c: New test case.
* gcc.c-torture/execute/20040409-2.c: New test case.
* gcc.c-torture/execute/20040409-3.c: New test case.
From-SVN: r80568
Diffstat (limited to 'libjava/testsuite/libjava.lang/SyncTest.java')
0 files changed, 0 insertions, 0 deletions