At one stage in working on the patches, I was editing the easy_fp_constant
predicate, and I noticed there was a test for the constant 0.0 at the top of
the function, as well as redundant tests in SFmode/DFmode. I deleted these
redundant tests. Is the patch acceptable to check in once the PowerPC
bootstraps again:
2014-11-11 Michael Meissner <[email protected]>
* config/rs6000/predicates.md (easy_fp_constant): Delete redunant
tests for 0.0.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: [email protected], phone: +1 (978) 899-4797
Index: gcc/config/rs6000/predicates.md
===================================================================
--- gcc/config/rs6000/predicates.md (revision 217369)
+++ gcc/config/rs6000/predicates.md (working copy)
@@ -479,10 +479,6 @@ (define_predicate "easy_fp_constant"
&& num_insns_constant_wide ((HOST_WIDE_INT) k[3]) == 1);
case DFmode:
- /* The constant 0.f is easy under VSX. */
- if (op == CONST0_RTX (DFmode) && VECTOR_UNIT_VSX_P (DFmode))
- return 1;
-
/* Force constants to memory before reload to utilize
compress_float_constant.
Avoid this when flag_unsafe_math_optimizations is enabled
@@ -500,10 +496,6 @@ (define_predicate "easy_fp_constant"
&& num_insns_constant_wide ((HOST_WIDE_INT) k[1]) == 1);
case SFmode:
- /* The constant 0.f is easy. */
- if (op == CONST0_RTX (SFmode))
- return 1;
-
/* Force constants to memory before reload to utilize
compress_float_constant.
Avoid this when flag_unsafe_math_optimizations is enabled
