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Hello! Attached patch introduces x64 and nox64 isa attributes. These are used to merge various TARGET_64BIT only patterns with base patterns. This patch merges FP move patters, but there will be several follow-up patches that merge other patterns, too. 2013-03-17 Uros Bizjak <ubizjak@gmail.com> * config/i386/i386.md (isa): Add x64 and nox64. (enabled): Define x64 for TARGET_64BIT and nox64 for !TARGET_64BIT. (*pushtf): Enable *roF alternative for x64 isa only. (*pushxf): Merge with *pushxf_nointeger. Use Yx*r constraint. Set mode attribute of integer alternatives to DImode for TARGET_64BIT. (*pushdf): Merge with *pushdf_rex64. Use x64 and nox64 isa attributes. (*movtf_internal): Merge from *movtf_internal_rex64 and *movtf_internal_sse. Use x64 and nox64 isa attributes. (*movxf_internal): Merge with *movxf_internal_rex64. Use x64 and nox64 isa attributes. (*movdf_internal): Merge with *movdf_internal_rex64. Use x64 and nox64 isa attributes. * config/i386/constraints.md (Yd): Do not set for TARGET_64BIT. Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32} and committed to mainline SVN. Uros.
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