Chris Lattner 1f58120bfe Teach loop-idiom to turn a loop containing a memset into a larger memset ... when safe. The testcase is basically this nested loop: void foo(char *X) { for (int i = 0; i != 100; ++i) for (int j = 0; j != 100; ++j) X[j+i*100] = 0; } which gets turned into a single memset now. clang -O3 doesn't optimize this yet though due to a phase ordering issue I haven't analyzed yet. llvm-svn: 122806		2011-01-04 07:46:33 +00:00
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basic.ll	Teach loop-idiom to turn a loop containing a memset into a larger memset	2011-01-04 07:46:33 +00:00
dg.exp	implement enough of the memset inference algorithm to recognize and insert	2010-12-26 23:42:51 +00:00