diff options
| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2019-09-11 10:44:06 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2019-09-11 10:44:06 +0000 |
| commit | 4d1f8ea2c3f5a0528966e58f8ba013a84275ed17 (patch) | |
| tree | 5185c31791dbd38328a83a84b20b850a7a9656ad | |
| parent | c84e340ffa6895d1bfc65308e40d292e23ab4378 (diff) | |
PR rtl-optimization/89795
* rtlanal.c (nonzero_bits1) <SUBREG>: Do not propagate results from
inner REGs to paradoxical SUBREGs if WORD_REGISTER_OPERATIONS is set.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@275638 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/rtlanal.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/sparc/20161111-1.c | 2 |
4 files changed, 12 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 18be6a493ce..ad4384a37c3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-09-11 Eric Botcazou <ebotcazou@adacore.com> + + PR rtl-optimization/89795 + * rtlanal.c (nonzero_bits1) <SUBREG>: Do not propagate results from + inner REGs to paradoxical SUBREGs if WORD_REGISTER_OPERATIONS is set. + 2019-09-09 Jakub Jelinek <jakub@redhat.com> PR target/87853 diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 5642c0d6fcf..bf1c42a8aa1 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -4636,7 +4636,7 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x, || ((extend_op = load_extend_op (inner_mode)) == SIGN_EXTEND ? val_signbit_known_set_p (inner_mode, nonzero) : extend_op != ZERO_EXTEND) - || (!MEM_P (SUBREG_REG (x)) && !REG_P (SUBREG_REG (x)))) + || !MEM_P (SUBREG_REG (x))) && GET_MODE_PRECISION (GET_MODE (x)) > GET_MODE_PRECISION (inner_mode)) nonzero diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 332294c99d6..d24390fb2ba 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2019-09-11 Eric Botcazou <ebotcazou@adacore.com> + + * gcc.target/sparc/20161111-1.c: XFAIL redundant zero-extension test. + 2019-09-10 Iain Sandoe <iain@sandoe.co.uk> Backport from mainline. diff --git a/gcc/testsuite/gcc.target/sparc/20161111-1.c b/gcc/testsuite/gcc.target/sparc/20161111-1.c index eda8b0a9f12..8195fec8990 100644 --- a/gcc/testsuite/gcc.target/sparc/20161111-1.c +++ b/gcc/testsuite/gcc.target/sparc/20161111-1.c @@ -14,4 +14,4 @@ unsigned char ee_isdigit2(unsigned int i) return retval; } -/* { dg-final { scan-assembler-not "and\t%" } } */ +/* { dg-final { scan-assembler-not "and\t%" { xfail *-*-* } } } */ |