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re PR target/82848 (ICE in expand_expr_real_2, at expr.c:8715)

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PR target/82848
	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Don't fold
	builtins not enabled in the currently selected ISA.

	* gcc.target/powerpc/pr82848.c: New test.

From-SVN: r255148
This commit is contained in:
Jakub Jelinek 2017-11-25 11:19:16 +01:00 • committed by Jakub Jelinek
parent 430ddc2279
commit b7f08b83e4
4 changed files with 30 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-11-25 Jakub Jelinek <jakub@redhat.com>
PR target/82848
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Don't fold
builtins not enabled in the currently selected ISA.
2017-11-24 Jackson Woodruff <jackson.woodruff@arm.com>
PR tree-optimization/71026

6
gcc/config/rs6000/rs6000.c
View file

@ -16143,6 +16143,12 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi)
if (!gimple_call_lhs (stmt) && !rs6000_builtin_valid_without_lhs (fn_code))
return false;
/* Don't fold invalid builtins, let rs6000_expand_builtin diagnose it. */
HOST_WIDE_INT mask = rs6000_builtin_info[uns_fncode].mask;
bool func_valid_p = (rs6000_builtin_mask & mask) == mask;
if (!func_valid_p)
return false;
switch (fn_code)
{
/* Flavors of vec_add. We deliberately don't expand

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2017-11-25 Jakub Jelinek <jakub@redhat.com>
PR target/82848
* gcc.target/powerpc/pr82848.c: New test.
2017-11-24 Jackson Woodruff <jackson.woodruff@arm.com>
PR tree-optimization/71026

13
gcc/testsuite/gcc.target/powerpc/pr82848.c Normal file
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@ -0,0 +1,13 @@
/* PR target/82848 */
/* { dg-do compile } */
/* { dg-options "-mno-altivec -mno-vsx -Wno-psabi" } */
#define C 3.68249351546114573519399405666776E-44f
#define vector __attribute__ ((altivec (vector__)))
vector float
foo (vector float a)
{
vector float b = __builtin_vec_madd (b, a, (vector float) { C, C, C, C }); /* { dg-error "requires the '-maltivec' option" } */
return b;
}