We run fwprop before combine, very early even in the case of fwprop1;
and fwprop1 will change memory addressing to what it considers cheaper.
After the "common" change, it now changes the indexed store instruction
in the testcase to be to a constant address. But that is not an
improvement at all: the byte reverse instructions only exist in the
indexed form, so they will not match anymore.
This patch changes the patterns for the byte reverse instructions to
allow plain memory_operand, letting reload fix this up.
PR target/92602
* config/rs6000/rs6000.md (bswap<mode>2_load for HSI): Change the
indexed_or_indirect_operand to be memory_operand.
(bswap<mode>2_store for HSI): Ditto.
(bswapdi2_load): Ditto.
(bswapdi2_store): Ditto.
From-SVN: r278821
