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Craig Topper
585ca3a7f5
Previously we could only negate the FMADD opcodes. This used to be mostly ok when we lowered FMA intrinsics during lowering. But with the move to llvm.fma from target specific intrinsics, we can combine (fneg (fma)) to (fmsub) earlier. So if we start with (fneg (fma (fneg))) we would get stuck at (fmsub (fneg)). This patch fixes that so we can also combine things like (fmsub (fneg)). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336304 91177308-0d34-0410-b5e6-96231b3b80d8
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