OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix PR41574 on 4.4 branch. 

2009-12-11  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	2009-10-05  Doug Kwan  <dougkwan@google.com>

	PR rtl-optimization/41574
	* combine.c (distribute_and_simplify_rtx): Quit if RTX mode is
	floating point and we are not doing unsafe math optimizations.


2009-12-11  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	2009-10-08  Doug Kwan  <dougkwan@google.com>

	PR rtl-optimization/41574
	* gcc.dg/pr41574.c: New test.

From-SVN: r155157
This commit is contained in:
Ramana Radhakrishnan 2009-12-11 11:21:33 +00:00 committed by Ramana Radhakrishnan
parent 1c8b0b14e3
commit c2f2791fc5
4 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/ChangeLog
View File

@ -1,5 +1,13 @@
2009-12-11 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
2009-10-05 Doug Kwan <dougkwan@google.com>
PR rtl-optimization/41574
* combine.c (distribute_and_simplify_rtx): Quit if RTX mode is
floating point and we are not doing unsafe math optimizations.
2009-12-11 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/41939
Backport from mainline:
2009-06-05 Julian Brown <julian@codesourcery.com>

6
gcc/combine.c
View File

@ -8512,6 +8512,12 @@ distribute_and_simplify_rtx (rtx x, int n)
enum rtx_code outer_code, inner_code;
rtx decomposed, distributed, inner_op0, inner_op1, new_op0, new_op1, tmp;
/* Distributivity is not true for floating point as it can change the
value. So we don't do it unless -funsafe-math-optimizations. */
if (FLOAT_MODE_P (GET_MODE (x))
&& ! flag_unsafe_math_optimizations)
return NULL_RTX;
decomposed = XEXP (x, n);
if (!ARITHMETIC_P (decomposed))
return NULL_RTX;

7
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2009-12-11 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
2009-10-08 Doug Kwan <dougkwan@google.com>
PR rtl-optimization/41574
* gcc.dg/pr41574.c: New test.
2009-11-13 Jason Merrill <jason@redhat.com>
PR c++/27425

15
gcc/testsuite/gcc.dg/pr41574.c Normal file
View File

@ -0,0 +1,15 @@
/* { dg-do compile } */
/* { dg-options "-O2 -march=armv7-a -mfloat-abi=softfp -mfpu=neon -fno-unsafe-math-optimizations -fdump-rtl-combine" { target { arm*-*-* } } } */
/* { dg-options "-O2 -fno-unsafe-math-optimizations -fdump-rtl-combine" { target { ! arm*-*-* } } } */
static const double one=1.0;
double
f(double x)
{
return x*(one+x);
}
/* { dg-final { scan-rtl-dump-not "\\(plus:DF \\(mult:DF" "combine" } } */
/* { dg-final { cleanup-rtl-dump "combine*" } } */