1 ; RUN: llc < %s -march=thumb -mattr=+thumb2,+t2xtpk | FileCheck %s 2 3 define i32 @test0(i8 %A) { 4 ; CHECK: test0 5 ; CHECK: sxtb r0, r0 6 %B = sext i8 %A to i32 7 ret i32 %B 8 } 9 10 define signext i8 @test1(i32 %A) { 11 ; CHECK: test1 12 ; CHECK: sxtb.w r0, r0, ror #8 13 %B = lshr i32 %A, 8 14 %C = shl i32 %A, 24 15 %D = or i32 %B, %C 16 %E = trunc i32 %D to i8 17 ret i8 %E 18 } 19 20 define signext i32 @test2(i32 %A, i32 %X) { 21 ; CHECK: test2 22 ; CHECK: lsrs r0, r0, #8 23 ; CHECK: sxtab r0, r1, r0 24 %B = lshr i32 %A, 8 25 %C = shl i32 %A, 24 26 %D = or i32 %B, %C 27 %E = trunc i32 %D to i8 28 %F = sext i8 %E to i32 29 %G = add i32 %F, %X 30 ret i32 %G 31 } 32
