1; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s --check-prefix=A8 2; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m3 %s -o - | FileCheck %s --check-prefix=M3 3; rdar://11318438 4 5define zeroext i8 @test1(i32 %A.u) { 6; A8-LABEL: test1: 7; A8: uxtb r0, r0 8 %B.u = trunc i32 %A.u to i8 9 ret i8 %B.u 10} 11 12define zeroext i32 @test2(i32 %A.u, i32 %B.u) { 13; A8-LABEL: test2: 14; A8: uxtab r0, r0, r1 15 16; M3-LABEL: 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 26define zeroext i32 @test3(i32 %A.u) { 27; A8-LABEL: test3: 28; A8: ubfx r0, r0, #8, #16 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 37define i32 @test4(i32 %A, i32 %X) { 38; A8-LABEL: test4: 39; A8: uxtab r0, r0, r1, ror #16 40 %X.hi = lshr i32 %X, 16 41 %X.trunc = trunc i32 %X.hi to i8 42 %addend = zext i8 %X.trunc to i32 43 44 %sum = add i32 %A, %addend 45 ret i32 %sum 46} 47 48define i32 @test5(i32 %A, i32 %X) { 49; A8-LABEL: test5: 50; A8: uxtah r0, r0, r1, ror #8 51 %X.hi = lshr i32 %X, 8 52 %X.trunc = trunc i32 %X.hi to i16 53 %addend = zext i16 %X.trunc to i32 54 55 %sum = add i32 %A, %addend 56 ret i32 %sum 57} 58