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_bswap':
4 ; CHECK-DAG: DemandedBits: 0xff000000 for %1 = or i32 %x, 1
5 ; CHECK-DAG: DemandedBits: 0xff for %2 = call i32 @llvm.bswap.i32(i32 %1)
6 ; CHECK-DAG: DemandedBits: 0xff for %3 = trunc i32 %2 to i8
7 define i8 @test_bswap(i32 %x) {
9 %2 = call i32 @llvm.bswap.i32(i32 %1)
10 %3 = trunc i32 %2 to i8
13 declare i32 @llvm.bswap.i32(i32)
15 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_bitreverse':
16 ; CHECK-DAG: DemandedBits: 0xff000000 for %1 = or i32 %x, 1
17 ; CHECK-DAG: DemandedBits: 0xff for %2 = call i32 @llvm.bitreverse.i32(i32 %1)
18 ; CHECK-DAG: DemandedBits: 0xff for %3 = trunc i32 %2 to i8
19 define i8 @test_bitreverse(i32 %x) {
21 %2 = call i32 @llvm.bitreverse.i32(i32 %1)
22 %3 = trunc i32 %2 to i8
25 declare i32 @llvm.bitreverse.i32(i32)
28 declare i32 @llvm.fshl.i32(i32, i32, i32)
29 declare i33 @llvm.fshr.i33(i33, i33, i33)
31 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshl':
32 ; CHECK-DAG: DemandedBits: 0xff for %x2 = or i32 %x, 1
33 ; CHECK-DAG: DemandedBits: 0xff000000 for %y2 = or i32 %y, 1
34 ; CHECK-DAG: DemandedBits: 0xffff for %z = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 8)
35 ; CHECK-DAG: DemandedBits: 0xffffffff for %r = and i32 %z, 65535
36 define i32 @test_fshl(i32 %x, i32 %y) {
39 %z = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 8)
40 %r = and i32 %z, 65535
44 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshr':
45 ; CHECK-DAG: DemandedBits: 0xff for %x2 = or i33 %x, 1
46 ; CHECK-DAG: DemandedBits: 0x1fe000000 for %y2 = or i33 %y, 1
47 ; CHECK-DAG: DemandedBits: 0xffff for %z = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 25)
48 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %r = and i33 %z, 65535
49 define i33 @test_fshr(i33 %x, i33 %y) {
52 %z = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 25)
53 %r = and i33 %z, 65535
57 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshl_zero_shift':
58 ; CHECK-DAG: DemandedBits: 0xffff for %x2 = or i32 %x, 1
59 ; CHECK-DAG: DemandedBits: 0x0 for %y2 = or i32 %y, 1
60 ; CHECK-DAG: DemandedBits: 0xffff for %z = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 0)
61 ; CHECK-DAG: DemandedBits: 0xffffffff for %r = and i32 %z, 65535
62 define i32 @test_fshl_zero_shift(i32 %x, i32 %y) {
65 %z = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 0)
66 %r = and i32 %z, 65535
70 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshr_full_shift':
71 ; CHECK-DAG: DemandedBits: 0x0 for %x2 = or i33 %x, 1
72 ; CHECK-DAG: DemandedBits: 0xffff for %y2 = or i33 %y, 1
73 ; CHECK-DAG: DemandedBits: 0xffff for %z = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 33)
74 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %r = and i33 %z, 65535
75 define i33 @test_fshr_full_shift(i33 %x, i33 %y) {
78 %z = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 33)
79 %r = and i33 %z, 65535
83 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshl_pow2_bitwidth':
84 ; CHECK-DAG: DemandedBits: 0xffffffff for %x2 = or i32 %x, 1
85 ; CHECK-DAG: DemandedBits: 0xffffffff for %y2 = or i32 %y, 1
86 ; CHECK-DAG: DemandedBits: 0x1f for %z2 = or i32 %z, 1
87 ; CHECK-DAG: DemandedBits: 0xffff for %f = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 %z2)
88 ; CHECK-DAG: DemandedBits: 0xffffffff for %r = and i32 %f, 65535
89 define i32 @test_fshl_pow2_bitwidth(i32 %x, i32 %y, i32 %z) {
93 %f = call i32 @llvm.fshl.i32(i32 %x2, i32 %y2, i32 %z2)
94 %r = and i32 %f, 65535
98 ; CHECK-LABEL: Printing analysis 'Demanded Bits Analysis' for function 'test_fshr_non_pow2_bitwidth':
99 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %x2 = or i33 %x, 1
100 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %y2 = or i33 %y, 1
101 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %z2 = or i33 %z, 1
102 ; CHECK-DAG: DemandedBits: 0xffff for %f = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 %z2)
103 ; CHECK-DAG: DemandedBits: 0x1ffffffff for %r = and i33 %f, 65535
104 define i33 @test_fshr_non_pow2_bitwidth(i33 %x, i33 %y, i33 %z) {
108 %f = call i33 @llvm.fshr.i33(i33 %x2, i33 %y2, i33 %z2)
109 %r = and i33 %f, 65535