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re PR tree-optimization/36891 (ICE with vector division and -ffast-math and LIM)

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2008-09-28  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Kaushal Kantawala  <kaushal_kantawala@playstation.sony.com>

        PR tree-opt/36891
        * tree-ssa-loop-im.c (rewrite_reciprocal): Set DECL_GIMPLE_REG_P on
        the newly created variable.
        Create a VECTOR_CST of all 1s for vector types.

2008-09-28  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Kaushal Kantawala  <kaushal_kantawala@playstation.sony.com>

        PR tree-opt/36891
        * gcc.dg/torture/pr36891.c: New testcase.


Co-Authored-By: Kaushal Kantawala <Kaushal_Kantawala@playstation.sony.com>

From-SVN: r140738
This commit is contained in:
Andrew Pinski 2008-09-28 22:48:48 +00:00 committed by Andrew Pinski
parent 0d5f7a16eb
commit f50d67f64e
4 changed files with 48 additions and 1 deletions

8
gcc/ChangeLog

@ -1,3 +1,11 @@
2008-09-28 Andrew Pinski <andrew_pinski@playstation.sony.com>
Kaushal Kantawala <kaushal_kantawala@playstation.sony.com>
PR tree-opt/36891
* tree-ssa-loop-im.c (rewrite_reciprocal): Set DECL_GIMPLE_REG_P on
the newly created variable.
Create a VECTOR_CST of all 1s for vector types.
2008-09-28 Eric Botcazou <ebotcazou@adacore.com>
PR middle-end/36575

6
gcc/testsuite/ChangeLog

@ -1,3 +1,9 @@
2008-09-28 Andrew Pinski <andrew_pinski@playstation.sony.com>
Kaushal Kantawala <kaushal_kantawala@playstation.sony.com>
PR tree-opt/36891
* gcc.dg/torture/pr36891.c: New testcase.
2008-09-28 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/conv_decimal.adb: New test.

17
gcc/testsuite/gcc.dg/torture/pr36891.c Normal file

@ -0,0 +1,17 @@
/* { dg-do compile } */
/* { dg-options "-ffast-math" } */
#define __vector __attribute__((vector_size(16) ))
__vector float f(void);
void g(__vector float);
void RRB( __vector float vdist, __vector float vx)
{
int detail;
for(detail = 0; detail < 5;++detail)
{
__vector float frand = f();
__vector float pullperc = frand/ vdist;
__vector float pullx = vx * pullperc;
g(pullx);
}
}

18
gcc/tree-ssa-loop-im.c

@ -763,6 +763,7 @@ rewrite_reciprocal (gimple_stmt_iterator *bsi)
{
gimple stmt, stmt1, stmt2;
tree var, name, lhs, type;
tree real_one;
stmt = gsi_stmt (*bsi);
lhs = gimple_assign_lhs (stmt);
@ -770,9 +771,24 @@ rewrite_reciprocal (gimple_stmt_iterator *bsi)
var = create_tmp_var (type, "reciptmp");
add_referenced_var (var);
DECL_GIMPLE_REG_P (var) = 1;
/* For vectors, create a VECTOR_CST full of 1's. */
if (TREE_CODE (type) == VECTOR_TYPE)
{
int i, len;
tree list = NULL_TREE;
real_one = build_real (TREE_TYPE (type), dconst1);
len = TYPE_VECTOR_SUBPARTS (type);
for (i = 0; i < len; i++)
list = tree_cons (NULL, real_one, list);
real_one = build_vector (type, list);
}
else
real_one = build_real (type, dconst1);
stmt1 = gimple_build_assign_with_ops (RDIV_EXPR,
var, build_real (type, dconst1), gimple_assign_rhs2 (stmt));
var, real_one, gimple_assign_rhs2 (stmt));
name = make_ssa_name (var, stmt1);
gimple_assign_set_lhs (stmt1, name);