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_mul':
4 ; CHECK-DAG: DemandedBits: 0xff for %1 = add nsw i32 %a, 5
5 ; CHECK-DAG: DemandedBits: 0xff for %3 = trunc i32 %2 to i8
6 ; CHECK-DAG: DemandedBits: 0xff for %2 = mul nsw i32 %1, %b
7 ; CHECK-DAG: DemandedBits: 0x1 for %4 = trunc i32 %2 to i1
8 ; CHECK-DAG: DemandedBits: 0xff for %5 = zext i1 %4 to i8
9 ; CHECK-DAG: DemandedBits: 0xff for %6 = add nsw i8 %3, %5
10 ; CHECK-DAG: DemandedBits: 0xff for %a in %1 = add nsw i32 %a, 5
11 ; CHECK-DAG: DemandedBits: 0xff for 5 in %1 = add nsw i32 %a, 5
12 ; CHECK-DAG: DemandedBits: 0xff for %1 in %2 = mul nsw i32 %1, %b
13 ; CHECK-DAG: DemandedBits: 0xff for %b in %2 = mul nsw i32 %1, %b
14 ; CHECK-DAG: DemandedBits: 0xff for %2 in %3 = trunc i32 %2 to i8
15 ; CHECK-DAG: DemandedBits: 0x1 for %2 in %4 = trunc i32 %2 to i1
16 ; CHECK-DAG: DemandedBits: 0x1 for %4 in %5 = zext i1 %4 to i8
17 ; CHECK-DAG: DemandedBits: 0xff for %3 in %6 = add nsw i8 %3, %5
18 ; CHECK-DAG: DemandedBits: 0xff for %5 in %6 = add nsw i8 %3, %5
19 define i8 @test_mul(i32 %a, i32 %b) {
20 %1 = add nsw i32 %a, 5
21 %2 = mul nsw i32 %1, %b
22 %3 = trunc i32 %2 to i8
23 %4 = trunc i32 %2 to i1
25 %6 = add nsw i8 %3, %5