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fmul_a_oo
2018 Apr 12
2
How to specify the RegisterClass of an IMPLICIT_DEF?
...16 = MOVSUTO_A_iSLo Constant:i32<1084227584>
t16: i32 = COPY_TO_REGCLASS t14, TargetConstant:i32<8>
t18: v2f32 = INSERT_SUBREG IMPLICIT_DEF:v2f32, t16, TargetConstant:i32<1>
t6: v2f32 = INSERT_SUBREG t18, t16, TargetConstant:i32<2>
t7: v2f32 = FMUL_AB_oo t2, t6
But there is one small issue in the inference of RegisterClass of the implicitly defined register.
As shown below, the %vreg6<def> is implicitly defined as FPUabRegisterClass.
This register class accepts the v2f32 type, but for others addressing mode context this register should be FP...