procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tree-ssa-phiopt.c (minmax_replacement): Create new ssa name if we're not the only contributor to target phi.

Browse source 
* tree-ssa-phiopt.c (minmax_replacement): Create new ssa name if
	we're not the only contributor to target phi.

	testsuite/
	* c-c++-common/dfp/operator-comma.c: Call init function.
	* c-c++-common/dfp/convert-dfp-2.c: New test.

From-SVN: r226778
This commit is contained in:
Nathan Sidwell 2015-08-11 12:34:06 +00:00 • committed by Nathan Sidwell
parent 739a838e18
commit a6810021af
5 changed files with 66 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2015-08-11 Nathan Sidwell <nathan@acm.org>
* tree-ssa-phiopt.c (minmax_replacement): Create new ssa name if
we're not the only contributor to target phi.
2015-08-11 Jiong Wang <jiong.wang@arm.com>
* config/aarch64/aarch64.h (REG_CLASS_NAMES): Add the missing ',' after

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2015-08-11 Nathan Sidwell <nathan@acm.org>
* c-c++-common/dfp/operator-comma.c: Call init function.
* c-c++-common/dfp/convert-dfp-2.c: New test.
2015-08-10 H.J. Lu <hongjiu.lu@intel.com>
* gcc.target/i386/builtin_target.c (check_intel_cpu_model):

45
gcc/testsuite/c-c++-common/dfp/convert-dfp-2.c Normal file
View file

@ -0,0 +1,45 @@
/* { dg-options "-O0" } */
/* Test decimal fp conversions of zero. */
#include "dfp-dbg.h"
volatile _Decimal32 d32a, d32c;
volatile _Decimal64 d64a, d64c;
volatile _Decimal128 d128a, d128c;
int
main ()
{
d32a = d32c;
if (d32a)
FAILURE
d32a = d64c;
if (d32a)
FAILURE
d32a = d128c;
if (d32a)
FAILURE
d64a = d32c;
if (d64a)
FAILURE
d64a = d64c;
if (d64a)
FAILURE
d64a = d128c;
if (d64a)
FAILURE
d128a = d32c;
if (d128a)
FAILURE
d128a = d64c;
if (d128a)
FAILURE
d128a = d128c;
if (d128a)
FAILURE
FINISH
}

2
gcc/testsuite/c-c++-common/dfp/operator-comma.c
View file

@ -24,6 +24,8 @@ init ()
int
main ()
{
init ();
d32a = (d32b, d32c);
if (d32a != d32c)
FAILURE

10
gcc/tree-ssa-phiopt.c
View file

@ -1277,8 +1277,16 @@ minmax_replacement (basic_block cond_bb, basic_block middle_bb,
gsi_move_before (&gsi_from, &gsi);
}
/* Create an SSA var to hold the min/max result. If we're the only
things setting the target PHI, then we can clone the PHI
variable. Otherwise we must create a new one. */
result = PHI_RESULT (phi);
if (EDGE_COUNT (gimple_bb (phi)->preds) == 2)
result = duplicate_ssa_name (result, NULL);
else
result = make_ssa_name (TREE_TYPE (result));
/* Emit the statement to compute min/max. */
result = duplicate_ssa_name (PHI_RESULT (phi), NULL);
new_stmt = gimple_build_assign (result, minmax, arg0, arg1);
gsi = gsi_last_bb (cond_bb);
gsi_insert_before (&gsi, new_stmt, GSI_NEW_STMT);