[RISCV] Wrong operand order in ISEL pattern for masked vmslt[u]

[arcbbb]

Bugzilla Link	49623
Resolution	FIXED
Resolved on	May 06, 2021 17:02
Version	trunk
OS	All
Blocks	#48661
CC	@asb,@topperc,@frasercrmck,@tstellar
Fixed by commit(s)	fca5d63 c1831fc

Extended Description

The input operand order of masked vmslt[u] is (maskedoff, vector_in, vector_in/scalar_in, mask, vl),
but the isel pattern is (mask, vector_in, vector_in/scalar_in, maskedoff, vl)
This was solved by https://reviews.llvm.org/D98839

[asb]

Adding Fraser and Craig to the CC. Given 12.0 is at RC3 already and this only impacts a feature behind an experimental flag, I'm not sure we can reasonably expect the fix to go into 12.0.

[topperc]

I agree, it's probably too late to fix this for 12.0.0. Maybe we can do it for 12.0.1?

[arcbbb]

Actually I have no thoughts on this, so I have no problem to change it to 12.0.1.

[tstellar]

Merged: c1831fc