Fix floating point vector frem lowering. The frem operation takes two arguments. Pass both Src0 and Src1 to __frem_v4f32.
Fix floating point vector frem lowering.
The frem operation takes two arguments.
Pass both Src0 and Src1 to __frem_v4f32.

BUG=none
R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/387153002

google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader