[PATCH][AArch64][test][committed] Fix FAIL: gcc.target/aarch64/store-pair-1.c scan-assembler stp\tw[0-9]+, w[0-9]+

[Kyrill Tkachov]

Hi all,

I notice this test fails on aarch64-none-elf because the scan-assembler 
scans for w<num> registers when one of them can be the wzr reg since we 
store a 0 into *a.
This patch updates the pattern that is scanned for.

Committed as obvious with r220176.

Thanks,
Kyrill

2015-01-27  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

     * gcc.target/aarch64/store-pair-1.c: Update scan-assembler to check
     for wzr reg.
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