[llvm] [AArch64][SVE] Lower scalar FP converts to SVE when Neon is unavailable (PR #112564)

[Sander de Smalen via llvm-commits]

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@@ -472,20 +473,17 @@ define void @fcvtzu_v4f16_v4i64(ptr %a, ptr %b) {
 ; CHECK-LABEL: fcvtzu_v4f16_v4i64:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    ldr d0, [x0]
+; CHECK-NEXT:    ptrue p0.d
 ; CHECK-NEXT:    mov z1.h, z0.h[3]
 ; CHECK-NEXT:    mov z2.h, z0.h[2]
 ; CHECK-NEXT:    mov z3.h, z0.h[1]
-; CHECK-NEXT:    fcvtzu x10, h0
-; CHECK-NEXT:    fcvtzu x8, h1
-; CHECK-NEXT:    fcvtzu x9, h2
-; CHECK-NEXT:    fcvtzu x11, h3
-; CHECK-NEXT:    fmov d2, x10
-; CHECK-NEXT:    fmov d0, x8
-; CHECK-NEXT:    fmov d1, x9
-; CHECK-NEXT:    zip1 z0.d, z1.d, z0.d
-; CHECK-NEXT:    fmov d1, x11
+; CHECK-NEXT:    fcvtzu z0.d, p0/m, z0.h
+; CHECK-NEXT:    fcvtzu z1.d, p0/m, z1.h
+; CHECK-NEXT:    fcvtzu z2.d, p0/m, z2.h
+; CHECK-NEXT:    fcvtzu z3.d, p0/m, z3.h
 ; CHECK-NEXT:    zip1 z1.d, z2.d, z1.d
-; CHECK-NEXT:    stp q1, q0, [x1]
+; CHECK-NEXT:    zip1 z0.d, z0.d, z3.d
+; CHECK-NEXT:    stp q0, q1, [x1]
 ; CHECK-NEXT:    ret
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sdesmalen-arm wrote:

Very nice!

https://github.com/llvm/llvm-project/pull/112564