re PR target/65768 (sub-optimimal code for constant Uses in loop)

re PR target/65768 (sub-optimimal code for constant Uses in loop)

gcc/ChangeLog:

2015-05-16  Kugan Vivekanandarajah  <kuganv@linaro.org>
	    Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	PR target/65768
	* config/arm/arm.h (DONT_EARLY_SPLIT_CONSTANT): New macro.
	* config/arm/arm.md (subsi3, andsi3, iorsi3, xorsi3, movsi): Keep some
	 large constants in register instead of splitting them.

gcc/testsuite/ChangeLog:

2015-05-16  Kugan Vivekanandarajah  <kuganv@linaro.org>
	    Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	PR target/65768
	* gcc.target/arm/maskdata.c: New test.

Co-Authored-By: Zhenqiang Chen <zhenqiang.chen@linaro.org>
From-SVN: r223235