[cfe-users] Generation of FMA instructions in RISCV
Max Ruttenberg via cfe-users
cfe-users at lists.llvm.org
Tue Mar 2 18:19:51 PST 2021
I am using the clang RISCV backend and I am having trouble getting the compiler to generate FMA instructions with the following input.
float test (float first, float second, float third)
return first * second + third;
I am using -O3 and -ffast-math and I am specifying -march=imfa.
GCC generates FMA instructions with these flags. Is there something I am doing wrong?
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