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2014 Sep 26
2
[LLVMdev] Canonicalizing vector masking.
Hi, I received an internal test case from a game team (it wasn't about this in particular), and I was wondering if there was maybe an opportunity to canonicalize a particular code pattern: %inputi = bitcast <4 x float> %input to <4 x i32> %row0i = and <4 x i32> %inputi, <i32 -1, i32 0, i32 0, i32 0> %row0 = bitcast <4 x i32> %row0i to <4 x float> %row1i = and <4 x i32> %inputi, <i32 0, i32 -1, i32 0, i32 0> %row1 = bitcast <4 x i32> %row1i to <4 x float> %row2i = and <4 x i32>...