Sanjoy Das cbeb36a4cc [InstCombine] Optimize icmp slt signum(x), 1 --> icmp slt x, 1 ... Summary: `signum(x)` is sometimes implemented as `(x >> 63) | (-x >>> 63)` (for an `i64` `x`). This change adds a matcher for that pattern, and an instcombine rule to optimize `signum(x) s< 1`. Later, we can also consider optimizing: icmp slt signum(x), 0 --> icmp slt x, 0 icmp sle signum(x), 1 --> true etc. Reviewers: majnemer Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D12703 llvm-svn: 247846		2015-09-16 20:41:29 +00:00
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llvm	[InstCombine] Optimize icmp slt signum(x), 1 --> icmp slt x, 1	2015-09-16 20:41:29 +00:00
llvm-c	[WinEH] Add cleanupendpad instruction	2015-09-03 09:09:43 +00:00