1; RUN: llc < %s -march=arm | FileCheck %s 2 3define 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 15define 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 23define 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: cmp r2, #0 29; CHECK-NEXT: orr r0, r0, r1, lsl r3 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 36define 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: cmp r2, #0 42; CHECK-NEXT: orr r0, r0, r1, lsl r3 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