Fold trunc(avg(x,y)) for avgceil/floor u/s nodes if they have sufficient leading zero/sign bits-10

houngkoungting · houngkoungting · commit 4e1af14d3efa · 2025-08-17T23:32:43.000+08:00
diff --git a/llvm/test/CodeGen/AArch64/trunc-avg-fold.ll b/llvm/test/CodeGen/AArch64/trunc-avg-fold.ll
@@ -27,7 +27,7 @@ define <8 x i8> @test_avgceil_s(<8 x i8> %a, <8 x i8> %b) {
 }
 
 define <8 x i8> @avgfloor_u_i8_to_i16(<8 x i8> %a, <8 x i8> %b) {
-; CHECK-LABEL: avgfloor_u_from_intrin:
+; CHECK-LABEL: avgfloor_u_i8_to_i16:
 ; CHECK:       // %bb.0:
 ; CHECK-NEXT:    uhadd v0.8b, v0.8b, v1.8b
 ; CHECK-NEXT:    ret

Original file line number	Diff line number	Diff line change
`@@ -27,7 +27,7 @@ define <8 x i8> @test_avgceil_s(<8 x i8> %a, <8 x i8> %b) {`
`27`	`27`	`}`
`28`	`28`
`29`	`29`	`define <8 x i8> @avgfloor_u_i8_to_i16(<8 x i8> %a, <8 x i8> %b) {`
`30`		`-; CHECK-LABEL: avgfloor_u_from_intrin:`
	`30`	`+; CHECK-LABEL: avgfloor_u_i8_to_i16:`
`31`	`31`	`; CHECK: // %bb.0:`
`32`	`32`	`; CHECK-NEXT: uhadd v0.8b, v0.8b, v1.8b`
`33`	`33`	`; CHECK-NEXT: ret`