[PATCH] [ARM] Wrong t2STMIA size optimization in Thumb2SizeReduction
Tim Northover
t.p.northover at gmail.com
Wed Sep 10 04:59:08 PDT 2014
Hi Sergey,
The code itself looks fine, but the test can be made much more robust, and simpler at the same time. It's always a good idea to keep some regalloc-bait handy!
declare i8* @llvm.returnaddress(i32)
define i32* @foo(i32* %addr, i32 %val0) minsize {
store i32 %val0, i32* %addr
%addr1 = getelementptr i32* %addr, i32 1
%lr = call i8* @llvm.returnaddress(i32 0)
%lr32 = ptrtoint i8* %lr to i32
store i32 %lr32, i32* %addr1
%addr2 = getelementptr i32* %addr1, i32 1
ret i32* %addr2
}
Cheers.
Tim.
http://reviews.llvm.org/D5290
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