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| author | Jakub Jelinek <jakub@redhat.com> | 2016-02-26 16:53:43 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-02-26 16:53:43 +0100 |
| commit | a2ad54a07a7336103ff30140b591b4d6eb348dfd (patch) | |
| tree | ae1cf61ff668028960dbbf5e7352ada2e17af643 | |
| parent | 0884062c2cf3ee1a489591b89350478c4cca2db3 (diff) | |
| download | gcc-a2ad54a07a7336103ff30140b591b4d6eb348dfd.zip gcc-a2ad54a07a7336103ff30140b591b4d6eb348dfd.tar.gz gcc-a2ad54a07a7336103ff30140b591b4d6eb348dfd.tar.bz2 | |
re PR rtl-optimization/69891 (wrong code with -mstringop-strategy=libcall @ i686)
PR rtl-optimization/69891
* dse.c (scan_insn): If we can't figure out memset arguments
or they are non-constant, call clear_rhs_from_active_local_stores.
* gcc.target/i386/pr69891.c: New test.
Co-Authored-By: Eric Botcazou <ebotcazou@adacore.com>
From-SVN: r233743
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/dse.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr69891.c | 30 |
4 files changed, 44 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4f24b30..520275a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-02-26 Jakub Jelinek <jakub@redhat.com> + Eric Botcazou <ebotcazou@adacore.com> + + PR rtl-optimization/69891 + * dse.c (scan_insn): If we can't figure out memset arguments + or they are non-constant, call clear_rhs_from_active_local_stores. + 2016-02-26 Martin Liska <mliska@suse.cz> * doc/extend.texi: Mention clog10, clog10f an clog10l @@ -2556,6 +2556,8 @@ scan_insn (bb_info_t bb_info, rtx_insn *insn) active_local_stores = insn_info; } } + else + clear_rhs_from_active_local_stores (); } } else if (SIBLING_CALL_P (insn) && reload_completed) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 693e77d..c03759f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-02-26 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/69891 + * gcc.target/i386/pr69891.c: New test. + 2016-02-26 Michael Meissner <meissner@linux.vnet.ibm.com> Bill Schmidt <wschmidt@linux.vnet.ibm.com> diff --git a/gcc/testsuite/gcc.target/i386/pr69891.c b/gcc/testsuite/gcc.target/i386/pr69891.c new file mode 100644 index 0000000..2c5e863 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69891.c @@ -0,0 +1,30 @@ +/* PR rtl-optimization/69891 */ +/* { dg-do run } */ +/* { dg-options "-O -fno-tree-fre -mstringop-strategy=libcall -Wno-psabi" } */ +/* { dg-additional-options "-mno-sse" { target ia32 } } */ + +typedef unsigned short A; +typedef unsigned short B __attribute__ ((vector_size (32))); +typedef unsigned int C; +typedef unsigned int D __attribute__ ((vector_size (32))); +typedef unsigned long long E; +typedef unsigned long long F __attribute__ ((vector_size (32))); + +__attribute__((noinline, noclone)) unsigned +foo(D a, B b, D c, F d) +{ + b /= (B) {1, -c[0]} | 1; + c[0] |= 7; + a %= c | 1; + c ^= c; + return a[0] + b[15] + c[0] + d[3]; +} + +int +main () +{ + unsigned x = foo ((D) {}, (B) {}, (D) {}, (F) {}); + if (x != 0) + __builtin_abort (); + return 0; +} |