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On Fri, Jul 1, 2011 at 12:50 AM, H.J. Lu <hongjiu.lu@intel.com> wrote: > In one SSE2 int->float split, when TARGET_USE_VECTOR_CONVERTS is true, > TARGET_INTER_UNIT_MOVES is false and GENERAL_REG_P (op1) is true. we > will get gcc_unreachable. ?This patch removes TARGET_INTER_UNIT_MOVES > check. ?OK for trunk? This will result in register allocation failure. Operand 0 of sse2_loadld pattern has conditional constraint Yi that depends on TARGET_INTER_UNIT_MOVES, so we can't blindly generate sse2_loadld after reload. I'm testing attached patch. BTW: Do you perhaps have a testcase for this problem? 2011-07-03 Uros Bizjak <ubizjak@gmail.com> PR target/49600 * config/i386/i386.md (SSE2 int->float split): Push operand 1 in general register to memory for !TARGET_INTER_UNIT_MOVES. Thanks, Uros.
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