1 ; RUN: opt -S -disable-output -passes="print<demanded-bits>" < %s 2>&1 | FileCheck %s
3 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_add':
4 ; CHECK-DAG: DemandedBits: 0x1e for %1 = and i32 %a, 9
5 ; CHECK-DAG: DemandedBits: 0x1a for %2 = and i32 %b, 9
6 ; CHECK-DAG: DemandedBits: 0x1a for %3 = and i32 %c, 13
7 ; CHECK-DAG: DemandedBits: 0x1a for %4 = and i32 %d, 4
8 ; CHECK-DAG: DemandedBits: 0x1a for %5 = or i32 %2, %3
9 ; CHECK-DAG: DemandedBits: 0x1a for %6 = or i32 %4, %5
10 ; CHECK-DAG: DemandedBits: 0x10 for %7 = add i32 %1, %6
11 ; CHECK-DAG: DemandedBits: 0xffffffff for %8 = and i32 %7, 16
12 define i32 @test_add(i32 %a, i32 %b, i32 %c, i32 %d) {
16 %4 = and i32 %d, 4 ; no bit of %d alive, %4 simplifies to zero