1 ; RUN: llc < %s -march=thumb -mattr=+thumb2,+t2xtpk | FileCheck %s 2 3 define zeroext i8 @test1(i32 %A.u) { 4 ; CHECK: test1 5 ; CHECK: uxtb r0, r0 6 %B.u = trunc i32 %A.u to i8 7 ret i8 %B.u 8 } 9 10 define zeroext i32 @test2(i32 %A.u, i32 %B.u) { 11 ; CHECK: test2 12 ; CHECK: uxtab r0, r0, r1 13 %C.u = trunc i32 %B.u to i8 14 %D.u = zext i8 %C.u to i32 15 %E.u = add i32 %A.u, %D.u 16 ret i32 %E.u 17 } 18 19 define zeroext i32 @test3(i32 %A.u) { 20 ; CHECK: test3 21 ; CHECK: uxth.w r0, r0, ror #8 22 %B.u = lshr i32 %A.u, 8 23 %C.u = shl i32 %A.u, 24 24 %D.u = or i32 %B.u, %C.u 25 %E.u = trunc i32 %D.u to i16 26 %F.u = zext i16 %E.u to i32 27 ret i32 %F.u 28 } 29
