1 ; This entire chain of computation should be optimized away, but
2 ; wasn't because the two multiplies were not detected as being identical.
4 ; RUN: llvm-as < %s | opt -gcse -instcombine -dce | llvm-dis | not grep sub
6 implementation ; Functions:
8 uint "vnum_test4"(uint* %data) {
9 %idx1 = getelementptr uint* %data, uint 1
10 %idx2 = getelementptr uint* %data, uint 3
11 %reg1101 = load uint* %idx1
12 %reg1111 = load uint* %idx2
13 %reg109 = mul uint %reg1101, %reg1111
14 %reg108 = mul uint %reg1111, %reg1101
15 %reg121 = sub uint %reg108, %reg109