diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-09-05 08:15:21 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-09-05 08:15:21 +0000 |
| commit | 9b53a7514a42ef1cc590bb96c830fc040c4b4d48 (patch) | |
| tree | 4e6d55caa111216facd52e6c8a47450ca293be65 | |
| parent | 05b127f6b4cbdc02ac9ff4ebaa69888cf35c00bb (diff) | |
| download | gcc-9b53a7514a42ef1cc590bb96c830fc040c4b4d48.tar.gz | |
2017-09-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/82102
* tree-ssa-pre.c (fini_eliminate): Check if lhs is NULL.
* gcc.dg/torture/pr82102.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251692 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr82102.c | 21 | ||||
| -rw-r--r-- | gcc/tree-ssa-pre.c | 1 |
4 files changed, 32 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7a824f82a2e..5f60fe27690 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-09-05 Richard Biener <rguenther@suse.de> + + PR tree-optimization/82102 + * tree-ssa-pre.c (fini_eliminate): Check if lhs is NULL. + 2017-09-05 Martin Liska <mliska@suse.cz> PR tree-optimization/82032 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 28691293aa6..a21730089ed 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-09-05 Richard Biener <rguenther@suse.de> + + PR tree-optimization/82102 + * gcc.dg/torture/pr82102.c: New testcase. + 2017-09-05 Eric Botcazou <ebotcazou@adacore.com> * testsuite/gnat.dg/array29.ad[sb]: New test. diff --git a/gcc/testsuite/gcc.dg/torture/pr82102.c b/gcc/testsuite/gcc.dg/torture/pr82102.c new file mode 100644 index 00000000000..393f8bf9590 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr82102.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ + +void *a, *b; +struct pt3_i2cbuf { + int num_cmds; +} c; +void *memcpy(void *, void *, __SIZE_TYPE__); +void put_stop(); +void translate(struct pt3_i2cbuf *p1, int p2) +{ + p1->num_cmds = 0; + if (p2) + put_stop(); +} +void pt3_i2c_master_xfer(int p1) +{ + translate(&c, p1); + memcpy(a, b, c.num_cmds); + for (; p1;) + ; +} diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 185c19268ec..f6fa3bbddc0 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4860,6 +4860,7 @@ fini_eliminate (void) lhs = gimple_get_lhs (stmt); if (inserted_exprs + && lhs && TREE_CODE (lhs) == SSA_NAME && bitmap_bit_p (inserted_exprs, SSA_NAME_VERSION (lhs))) continue; |