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tree-ssa-math-opts.c (convert_plusminus_to_widen): Convert add_rhs to the correct type. 

2011-08-19  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* tree-ssa-math-opts.c (convert_plusminus_to_widen): Convert add_rhs
	to the correct type.

	gcc/testsuite/
	* gcc.target/arm/wmul-10.c: New file.

From-SVN: r177909
This commit is contained in:
Andrew Stubbs 2011-08-19 15:01:41 +00:00 committed by Andrew Stubbs
parent 6a228c2c0e
commit 75161d2ca5
4 changed files with 25 additions and 0 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2011-08-19 Andrew Stubbs <ams@codesourcery.com>
* tree-ssa-math-opts.c (convert_plusminus_to_widen): Convert add_rhs
to the correct type.
2011-08-19 Andrew Stubbs <ams@codesourcery.com>
* tree-ssa-math-opts.c (convert_mult_to_widen): Better handle

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2011-08-19 Andrew Stubbs <ams@codesourcery.com>
* gcc.target/arm/wmul-10.c: New file.
2011-08-19 Andrew Stubbs <ams@codesourcery.com>
* gcc.target/arm/wmul-9.c: New file.

12
gcc/testsuite/gcc.target/arm/wmul-10.c Normal file
View File

@ -0,0 +1,12 @@
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-require-effective-target arm_dsp } */
unsigned long long
foo (unsigned short a, unsigned short *b, unsigned short *c)
{
return (unsigned)a + (unsigned long long)*b * (unsigned long long)*c;
}
/* { dg-final { scan-assembler "umlal" } } */

4
gcc/tree-ssa-math-opts.c
View File

@ -2369,6 +2369,10 @@ convert_plusminus_to_widen (gimple_stmt_iterator *gsi, gimple stmt,
mult_rhs2 = build_and_insert_cast (gsi, loc, tmp, mult_rhs2);
}
if (!useless_type_conversion_p (type, TREE_TYPE (add_rhs)))
add_rhs = build_and_insert_cast (gsi, loc, create_tmp_var (type, NULL),
add_rhs);
gimple_assign_set_rhs_with_ops_1 (gsi, wmult_code, mult_rhs1, mult_rhs2,
add_rhs);
update_stmt (gsi_stmt (*gsi));