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-upgrade < %s | llvm-as | opt -gcse -instcombine -dce | \
5 ; RUN: llvm-dis | not grep sub
7 implementation ; Functions:
9 uint "vnum_test4"(uint* %data) {
10 %idx1 = getelementptr uint* %data, uint 1
11 %idx2 = getelementptr uint* %data, uint 3
12 %reg1101 = load uint* %idx1
13 %reg1111 = load uint* %idx2
14 %reg109 = mul uint %reg1101, %reg1111
15 %reg108 = mul uint %reg1111, %reg1101
16 %reg121 = sub uint %reg108, %reg109