5 Commits

Author	SHA1	Message	Date
Simon Pilgrim	5dc4e7c2b9	[VectorCombine] scalarizeBinop - support an all-constant src vector operand ... scalarizeBinop currently folds vec_bo((inselt VecC0, V0, Index), (inselt VecC1, V1, Index)) -> inselt(vec_bo(VecC0, VecC1), scl_bo(V0,V1), Index) This patch extends this to account for cases where one of the vec_bo operands is already all-constant and performs similar cost checks to determine if the scalar binop with a constant still makes sense: vec_bo((inselt VecC0, V0, Index), VecC1) -> inselt(vec_bo(VecC0, VecC1), scl_bo(V0,extractelt(V1,Index)), Index) Fixes PR42174 Differential Revision: https://reviews.llvm.org/D80885	2020-06-09 19:02:05 +01:00
Simon Pilgrim	c2e27ac1ce	[VectorCombine] Add multi-use shl test for D80885	2020-06-03 19:42:15 +01:00
Simon Pilgrim	9f8ea2e6cf	[VectorCombine] Add multi-use multiply test for D80885	2020-06-03 18:54:03 +01:00
Simon Pilgrim	6ce6960b92	[VectorCombine][X86] Add loaded insert tests from D80885	2020-06-02 10:04:05 +01:00
Sanjay Patel	e31f2a894a	[VectorCombine] add tests for scalarizing binop-with-constant; NFC ... Goes with proposal in D80885. This is adapted from the InstCombine tests that were added for D50992 But these should be adjusted further to provide more interesting scenarios for x86-specific codegen. Eg, vector types/sizes will have different costs depending on ISA attributes. We also need to add tests that include a load of the scalar variable and add tests that include extra uses of the insert to further exercise the cost model.	2020-05-31 09:11:30 -04:00