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| author | Jakub Jelinek <jakub@redhat.com> | 2015-02-06 12:36:34 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2015-02-06 12:36:34 +0100 |
| commit | d26ac279bca9a071d5f4de994b1dc8cd214335c2 (patch) | |
| tree | 17b7f8c04d0c1ad9c59b006581789e3b4b2fd576 | |
| parent | e3a7c6cf721d52efe1a80b83149edd8c66568841 (diff) | |
| download | gcc-d26ac279bca9a071d5f4de994b1dc8cd214335c2.zip gcc-d26ac279bca9a071d5f4de994b1dc8cd214335c2.tar.gz gcc-d26ac279bca9a071d5f4de994b1dc8cd214335c2.tar.bz2 | |
re PR rtl-optimization/64957 (wrong code at -O1, -O2 and -O3 on x86_64-linux-gnu)
PR rtl-optimization/64957
PR debug/64817
* simplify-rtx.c (simplify_binary_operation_1): Use ~cval for
IOR rather than for AND.
* gcc.c-torture/execute/pr64957.c: New test.
From-SVN: r220475
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr64957.c | 23 |
4 files changed, 38 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7cf5049..3a5d7a2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-02-06 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/64957 + PR debug/64817 + * simplify-rtx.c (simplify_binary_operation_1): Use ~cval for + IOR rather than for AND. + 2015-02-06 Eric Botcazou <ebotcazou@adacore.com> PR target/62631 diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 04452c6..a003b41 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2731,9 +2731,9 @@ simplify_binary_operation_1 (enum rtx_code code, machine_mode mode, HOST_WIDE_INT xcval; if (op == IOR) - xcval = cval; - else xcval = ~cval; + else + xcval = cval; return simplify_gen_binary (XOR, mode, simplify_gen_binary (op, mode, a, c), diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 55715ad..48a804f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2015-02-06 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/64957 + PR debug/64817 + * gcc.c-torture/execute/pr64957.c: New test. + 2015-02-05 Jeff Law <law@redhat.com> PR target/17306 diff --git a/gcc/testsuite/gcc.c-torture/execute/pr64957.c b/gcc/testsuite/gcc.c-torture/execute/pr64957.c new file mode 100644 index 0000000..2a70e17 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr64957.c @@ -0,0 +1,23 @@ +/* PR rtl-optimization/64957 */ + +__attribute__((noinline, noclone)) int +foo (int b) +{ + return (((b ^ 5) | 1) ^ 5) | 1; +} + +__attribute__((noinline, noclone)) int +bar (int b) +{ + return (((b ^ ~5) & ~1) ^ ~5) & ~1; +} + +int +main () +{ + int i; + for (i = 0; i < 16; i++) + if (foo (i) != (i | 1) || bar (i) != (i & ~1)) + __builtin_abort (); + return 0; +} |