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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2015-09-30 18:51:31 +0000 |
|---|---|---|
| committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2015-09-30 18:51:31 +0000 |
| commit | 9a9fe2b4d216494a9992a354c337c8b2279c43b8 (patch) | |
| tree | ea16b69240bd8a87433b37ab3b9bacde0c5c69b1 /gcc | |
| parent | dc0ccbb3a3e60f0423ac69d82f6cb78ff9b10800 (diff) | |
| download | gcc-9a9fe2b4d216494a9992a354c337c8b2279c43b8.zip gcc-9a9fe2b4d216494a9992a354c337c8b2279c43b8.tar.gz gcc-9a9fe2b4d216494a9992a354c337c8b2279c43b8.tar.bz2 | |
re PR rtl-optimization/67037 (Wrong code at -O1 and above on ARM)
2015-09-30 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR rtl-optimization/67037
* lra-constraints.c (process_addr_reg): Use copy_rtx when necessary.
testsuite:
2015-09-30 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR rtl-optimization/67037
* gcc.c-torture/execute/pr67037.c: New test.
From-SVN: r228303
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/lra-constraints.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr67037.c | 49 |
4 files changed, 60 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dd723b8..b60a3e6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-09-30 Bernd Edlinger <bernd.edlinger@hotmail.de> + + PR rtl-optimization/67037 + * lra-constraints.c (process_addr_reg): Use copy_rtx when necessary. + 2015-09-30 Bernd Schmidt <bernds@redhat.com> * gimple-ssa.h (gimple_df): Add free_ssanames_queue field. diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index c6afa7a..7764f29 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -1339,7 +1339,7 @@ process_addr_reg (rtx *loc, bool check_only_p, rtx_insn **before, rtx_insn **aft if (after != NULL) { start_sequence (); - lra_emit_move (reg, new_reg); + lra_emit_move (before_p ? copy_rtx (reg) : reg, new_reg); emit_insn (*after); *after = get_insns (); end_sequence (); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9cddbef..ece4ad1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-09-30 Bernd Edlinger <bernd.edlinger@hotmail.de> + + PR rtl-optimization/67037 + * gcc.c-torture/execute/pr67037.c: New test. + 2015-09-30 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * lib/target-supports.exp (check_effective_target_sync_int_128): diff --git a/gcc/testsuite/gcc.c-torture/execute/pr67037.c b/gcc/testsuite/gcc.c-torture/execute/pr67037.c new file mode 100644 index 0000000..3119d32 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr67037.c @@ -0,0 +1,49 @@ +long (*extfunc)(); + +static inline void lstrcpynW( short *d, const short *s, int n ) +{ + unsigned int count = n; + + while ((count > 1) && *s) + { + count--; + *d++ = *s++; + } + if (count) *d = 0; +} + +int __attribute__((noinline,noclone)) +badfunc(int u0, int u1, int u2, int u3, + short *fsname, unsigned int fsname_len) +{ + static const short ntfsW[] = {'N','T','F','S',0}; + char superblock[2048+3300]; + int ret = 0; + short *p; + + if (extfunc()) + return 0; + p = (void *)extfunc(); + if (p != 0) + goto done; + + extfunc(superblock); + + lstrcpynW(fsname, ntfsW, fsname_len); + + ret = 1; +done: + return ret; +} + +static long f() +{ + return 0; +} + +int main() +{ + short buf[6]; + extfunc = f; + return !badfunc(0, 0, 0, 0, buf, 6); +} |