[llvm] [X86] shouldReduceLoadWidth - don't split loads if ANY uses are a extract+store or a full width legal binop (PR #129695)

[Simon Pilgrim via llvm-commits]

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@@ -4228,7 +4228,7 @@ define <4 x float> @uitofp_load_4i64_to_4f32(ptr%a) {
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vmovdqa (%rdi), %ymm0
 ; AVX1-NEXT:    vpsrlq $1, %xmm0, %xmm1
-; AVX1-NEXT:    vmovdqa 16(%rdi), %xmm2
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
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RKSimon wrote:

standard tradeoff - do we want to increase work for the AGU+LSU or the FPU.

https://github.com/llvm/llvm-project/pull/129695