Jingyue Wu 9cecacd16a Simplify n-ary adds by reassociation ... Summary: This transformation reassociates a n-ary add so that the add can partially reuse existing instructions. For example, this pass can simplify void foo(int a, int b) { bar(a + b); bar((a + 2) + b); } to void foo(int a, int b) { int t = a + b; bar(t); bar(t + 2); } saving one add instruction. Fixes PR22357 (https://llvm.org/bugs/show_bug.cgi?id=22357). Test Plan: nary-add.ll Reviewers: broune, dberlin, hfinkel, meheff, sanjoy, atrick Reviewed By: sanjoy, atrick Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8950 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234855 91177308-0d34-0410-b5e6-96231b3b80d8		2015-04-14 04:59:22 +00:00
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InstCombine	GCC complains thusly: "attributes at the beginning of statement are ignored [-Werror=attributes]". Very well then! NFC	2015-04-13 20:03:08 +00:00
Instrumentation	DebugInfo: Gut DISubprogram and DILexicalBlock*	2015-04-14 03:40:37 +00:00
IPO	DebugInfo: Update signature of DICompileUnit::replace*()	2015-04-14 03:51:36 +00:00
ObjCARC	Remove empty non-virtual destructors or mark them =default when non-public	2015-04-11 15:32:26 +00:00
Scalar	Simplify n-ary adds by reassociation	2015-04-14 04:59:22 +00:00
Utils	DebugInfo: Update signature of DICompileUnit::replace*()	2015-04-14 03:51:36 +00:00
Vectorize	Reduce dyn_cast<> to isa<> or cast<> where possible.	2015-04-10 11:24:51 +00:00
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