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re PR tree-optimization/57322 (Segfault at -O1 in build_and_add_sum)

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2013-05-21  Easwaran Raman  <eraman@google.com>

	PR tree-optimization/57322
	* (build_and_add_sum): If a BB is empty, set the UID of the statement
	added to the BB to be 1.

testsuite/ChangeLog:

2013-05-21  Easwaran Raman  <eraman@google.com>

	PR tree-optimization/57322
	* gcc.dg/tree-ssa/reassoc-29.c: New testcase.

From-SVN: r199165
This commit is contained in:
Easwaran Raman 2013-05-21 22:36:29 +00:00
parent 639879525e
commit 4f7a634e7b
4 changed files with 33 additions and 2 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2013-05-21 Easwaran Raman <eraman@google.com>
PR tree-optimization/57322
* (build_and_add_sum): If a BB is empty, set the UID of the statement
added to the BB to be 1.
2013-05-21 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/57331
@ -46,6 +52,7 @@
* config/sh/sh.md (fmasf4): Remove empty constraints strings.
(*fmasf4, *fmasf4_media): New insns.
>>>>>>> .r199151
2013-05-19 Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips.h (BASE_INSN_LENGTH, NOP_INSN_LENGTH): New macros.

7
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2013-05-21 Easwaran Raman <eraman@google.com>
PR tree-optimization/57322
* gcc.dg/tree-ssa/reassoc-29.c: New testcase.
2013-05-21 Graham Stott <graham.stott@btinternet.com>
* lib/scanasm.exp (dg-function-on-line): Make MIPS targets match
@ -105,7 +110,7 @@
PR c++/57175
* g++.dg/pr57175.C: New testcase.
2013-05-17 Easwaran Raman <eraman@google.com>
2013-05-17 Easwaran Raman <eraman@google.com>
* gcc.dg/tree-ssa/reassoc-28.c: New testcase.

15
gcc/testsuite/gcc.dg/tree-ssa/reassoc-29.c Normal file
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@ -0,0 +1,15 @@
/* PR tree-optimization/57322 */
/* { dg-do compile } */
/* { dg-options "-w -O1" } */
int a;
void f (void)
{
char b;
for (;; a++)
{
char *p = &b, *q;
*q = b < 0 & !!*p;
}
}

6
gcc/tree-ssa-reassoc.c
View File

@ -1165,8 +1165,12 @@ build_and_add_sum (tree type, tree op1, tree op2, enum tree_code opcode)
if ((!op1def || gimple_nop_p (op1def))
&& (!op2def || gimple_nop_p (op2def)))
{
gimple first_stmt;
unsigned uid;
gsi = gsi_after_labels (single_succ (ENTRY_BLOCK_PTR));
gimple_set_uid (sum, gimple_uid (gsi_stmt (gsi)));
first_stmt = gsi_stmt (gsi);
uid = first_stmt ? gimple_uid (first_stmt) : 1;
gimple_set_uid (sum, uid);
gsi_insert_before (&gsi, sum, GSI_NEW_STMT);
}
else if ((!op1def || gimple_nop_p (op1def))