1 ; RUN: llc < %s -march=arm -mattr=+v6 | \ 2 ; RUN: grep sxtb | count 2 3 ; RUN: llc < %s -march=arm -mattr=+v6 | \ 4 ; RUN: grep sxtb | grep ror | count 1 5 ; RUN: llc < %s -march=arm -mattr=+v6 | \ 6 ; RUN: grep sxtab | count 1 7 8 define i32 @test0(i8 %A) { 9 %B = sext i8 %A to i32 10 ret i32 %B 11 } 12 13 define signext i8 @test1(i32 %A) { 14 %B = lshr i32 %A, 8 15 %C = shl i32 %A, 24 16 %D = or i32 %B, %C 17 %E = trunc i32 %D to i8 18 ret i8 %E 19 } 20 21 define signext i32 @test2(i32 %A, i32 %X) { 22 %B = lshr i32 %A, 8 23 %C = shl i32 %A, 24 24 %D = or i32 %B, %C 25 %E = trunc i32 %D to i8 26 %F = sext i8 %E to i32 27 %G = add i32 %F, %X 28 ret i32 %G 29 } 30
