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In g++.dg/opt/store-merging-2.C, the natural alignment of types T and S is a single byte, so we shouldn't expect store merging on strict-alignment platforms. Indeed, without something like the adjust-alignment pass to bump up the alignment of the automatic variable, as in GCC 10, the optimization does not occur. This patch adjusts the test so that the required alignment is expressly stated, and so we don't rely on its accidentally being there to get the desired optimization. for gcc/testsuite/ChangeLog * g++.dg/opt/store-merging-2.C: Add the required alignment.
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