1 ; RUN: llc -march=x86-64 < %s | FileCheck %s 2 3 ; Codegen should be able to use a 32-bit shift instead of a 64-bit shift. 4 ; CHECK: shll $16 5 6 define fastcc void @test(i32 %level, i64 %a, i64 %b, i64 %c, i64 %d, i32* %p) nounwind { 7 if.end523: ; preds = %if.end453 8 %conv7981749 = zext i32 %level to i64 ; <i64> [#uses=1] 9 %and799 = shl i64 %conv7981749, 16 ; <i64> [#uses=1] 10 %shl800 = and i64 %and799, 16711680 ; <i64> [#uses=1] 11 %or801 = or i64 %shl800, %a ; <i64> [#uses=1] 12 %or806 = or i64 %or801, %b ; <i64> [#uses=1] 13 %or811 = or i64 %or806, %c ; <i64> [#uses=1] 14 %or819 = or i64 %or811, %d ; <i64> [#uses=1] 15 %conv820 = trunc i64 %or819 to i32 ; <i32> [#uses=1] 16 store i32 %conv820, i32* %p 17 ret void 18 } 19 20 ; CHECK: foo: 21 22 declare void @bar(i64) 23 24 define fastcc void @foo(i32 %t) { 25 bb: 26 %tmp = add i32 %t, -1 ; <i32> [#uses=1] 27 br label %bb1 28 29 bb1: ; preds = %bb 30 %tmp2 = zext i32 %tmp to i64 ; <i64> [#uses=2] 31 %tmp3 = add i64 %tmp2, 1 ; <i64> [#uses=1] 32 %tmp4 = xor i64 %tmp2, 536870911 ; <i64> [#uses=1] 33 %tmp5 = and i64 %tmp3, %tmp4 ; <i64> [#uses=1] 34 %tmp6 = shl i64 %tmp5, 3 ; <i64> [#uses=1] 35 %tmp7 = sub i64 64, %tmp6 ; <i64> [#uses=1] 36 %tmp8 = and i64 %tmp7, 4294967288 ; <i64> [#uses=1] 37 %tmp9 = lshr i64 -1, %tmp8 ; <i64> [#uses=1] 38 call void @bar(i64 %tmp9) 39 ret void 40 } 41
