1 ; RUN: llc < %s -march=arm | FileCheck %s 2 3 define i64 @f0(i64 %A, i64 %B) { 4 ; CHECK: f0 5 ; CHECK: lsrs r3, r3, #1 6 ; CHECK-NEXT: rrx r2, r2 7 ; CHECK-NEXT: subs r0, r0, r2 8 ; CHECK-NEXT: sbc r1, r1, r3 9 %tmp = bitcast i64 %A to i64 10 %tmp2 = lshr i64 %B, 1 11 %tmp3 = sub i64 %tmp, %tmp2 12 ret i64 %tmp3 13 } 14 15 define i32 @f1(i64 %x, i64 %y) { 16 ; CHECK: f1 17 ; CHECK: lsl{{.*}}r2 18 %a = shl i64 %x, %y 19 %b = trunc i64 %a to i32 20 ret i32 %b 21 } 22 23 define i32 @f2(i64 %x, i64 %y) { 24 ; CHECK: f2 25 ; CHECK: lsr{{.*}}r2 26 ; CHECK-NEXT: rsb r3, r2, #32 27 ; CHECK-NEXT: sub r2, r2, #32 28 ; CHECK-NEXT: orr r0, r0, r1, lsl r3 29 ; CHECK-NEXT: cmp r2, #0 30 ; CHECK-NEXT: asrge r0, r1, r2 31 %a = ashr i64 %x, %y 32 %b = trunc i64 %a to i32 33 ret i32 %b 34 } 35 36 define i32 @f3(i64 %x, i64 %y) { 37 ; CHECK: f3 38 ; CHECK: lsr{{.*}}r2 39 ; CHECK-NEXT: rsb r3, r2, #32 40 ; CHECK-NEXT: sub r2, r2, #32 41 ; CHECK-NEXT: orr r0, r0, r1, lsl r3 42 ; CHECK-NEXT: cmp r2, #0 43 ; CHECK-NEXT: lsrge r0, r1, r2 44 %a = lshr i64 %x, %y 45 %b = trunc i64 %a to i32 46 ret i32 %b 47 } 48