1 ; RUN: llc < %s -march=thumb -mcpu=cortex-a8 | FileCheck %s --check-prefix=A8 2 ; RUN: llc < %s -march=thumb -mcpu=cortex-m3 | FileCheck %s --check-prefix=M3 3 ; rdar://11318438 4 5 define zeroext i8 @test1(i32 %A.u) { 6 ; A8: test1 7 ; A8: uxtb r0, r0 8 %B.u = trunc i32 %A.u to i8 9 ret i8 %B.u 10 } 11 12 define zeroext i32 @test2(i32 %A.u, i32 %B.u) { 13 ; A8: test2 14 ; A8: uxtab r0, r0, r1 15 16 ; M3: test2 17 ; M3: uxtb r1, r1 18 ; M3-NOT: uxtab 19 ; M3: add r0, r1 20 %C.u = trunc i32 %B.u to i8 21 %D.u = zext i8 %C.u to i32 22 %E.u = add i32 %A.u, %D.u 23 ret i32 %E.u 24 } 25 26 define zeroext i32 @test3(i32 %A.u) { 27 ; A8: test3 28 ; A8: uxth.w r0, r0, ror #8 29 %B.u = lshr i32 %A.u, 8 30 %C.u = shl i32 %A.u, 24 31 %D.u = or i32 %B.u, %C.u 32 %E.u = trunc i32 %D.u to i16 33 %F.u = zext i16 %E.u to i32 34 ret i32 %F.u 35 } 36
