[X86] Improve sum-of-reductions v4f32 test coverage
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Thu, 14 Jan 2021 11:05:04 +0000 (11:05 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Thu, 14 Jan 2021 11:05:19 +0000 (11:05 +0000)
commit8f1d7f3753ca132b310bbb0e62c394cfa75daee5
tree3aa11fb5cc85658240c74e70f96c3278d548c1c6
parentaf8d27a7a8266b89916b5e4db2b2fd97eb7d84e5
[X86] Improve sum-of-reductions v4f32 test coverage

Ensure that the v4f32 reductions use a -0.0f start value and add fast-math test variant.
llvm/test/CodeGen/X86/horizontal-sum.ll