1 ; RUN: llc < %s -march=thumb 2 3 ; Test Thumb-mode "I" constraint, for ADD immediate. 4 define i32 @testI(i32 %x) { 5 %y = call i32 asm "add $0, $1, $2", "=r,r,I"( i32 %x, i32 255 ) nounwind 6 ret i32 %y 7 } 8 9 ; Test Thumb-mode "J" constraint, for negated ADD immediates. 10 define void @testJ() { 11 tail call void asm sideeffect ".word $0", "J"( i32 -255 ) nounwind 12 ret void 13 } 14 15 ; Test Thumb-mode "K" constraint, for compatibility with GCC's internal use. 16 define void @testK() { 17 tail call void asm sideeffect ".word $0", "K"( i32 65280 ) nounwind 18 ret void 19 } 20 21 ; Test Thumb-mode "L" constraint, for 3-operand ADD immediates. 22 define i32 @testL(i32 %x) { 23 %y = call i32 asm "add $0, $1, $2", "=r,r,L"( i32 %x, i32 -7 ) nounwind 24 ret i32 %y 25 } 26 27 ; Test Thumb-mode "M" constraint, for "ADD r = sp + imm". 28 define i32 @testM() { 29 %y = call i32 asm "add $0, sp, $1", "=r,M"( i32 1020 ) nounwind 30 ret i32 %y 31 } 32 33 ; Test Thumb-mode "N" constraint, for values between 0 and 31. 34 define i32 @testN(i32 %x) { 35 %y = call i32 asm "lsl $0, $1, $2", "=r,r,N"( i32 %x, i32 31 ) nounwind 36 ret i32 %y 37 } 38 39 ; Test Thumb-mode "O" constraint, for "ADD sp = sp + imm". 40 define void @testO() { 41 tail call void asm sideeffect "add sp, sp, $0; add sp, sp, $1", "O,O"( i32 -508, i32 508 ) nounwind 42 ret void 43 } 44
