source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/cttz.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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1; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 | FileCheck %s
2; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 -mattr=+neon | FileCheck %s
3
4; This test checks the @llvm.cttz.* intrinsics for integers.
5
6declare i8 @llvm.cttz.i8(i8, i1)
7declare i16 @llvm.cttz.i16(i16, i1)
8declare i32 @llvm.cttz.i32(i32, i1)
9declare i64 @llvm.cttz.i64(i64, i1)
10
11;------------------------------------------------------------------------------
12
13define i8 @test_i8(i8 %a) {
14; CHECK-LABEL: test_i8:
15; CHECK: orr [[REG:r[0-9]+]], [[REG]], #256
16; CHECK: rbit
17; CHECK: clz
18  %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 false)
19  ret i8 %tmp
20}
21
22define i16 @test_i16(i16 %a) {
23; CHECK-LABEL: test_i16:
24; CHECK: orr [[REG:r[0-9]+]], [[REG]], #65536
25; CHECK: rbit
26; CHECK: clz
27  %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 false)
28  ret i16 %tmp
29}
30
31define i32 @test_i32(i32 %a) {
32; CHECK-LABEL: test_i32:
33; CHECK: rbit
34; CHECK: clz
35  %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 false)
36  ret i32 %tmp
37}
38
39define i64 @test_i64(i64 %a) {
40; CHECK-LABEL: test_i64:
41; CHECK: rbit
42; CHECK: rbit
43; CHECK: cmp
44; CHECK: clz
45; CHECK: add
46; CHECK: clzne
47  %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 false)
48  ret i64 %tmp
49}
50
51;------------------------------------------------------------------------------
52
53define i8 @test_i8_zero_undef(i8 %a) {
54; CHECK-LABEL: test_i8_zero_undef:
55; CHECK-NOT: orr
56; CHECK: rbit
57; CHECK: clz
58  %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 true)
59  ret i8 %tmp
60}
61
62define i16 @test_i16_zero_undef(i16 %a) {
63; CHECK-LABEL: test_i16_zero_undef:
64; CHECK-NOT: orr
65; CHECK: rbit
66; CHECK: clz
67  %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 true)
68  ret i16 %tmp
69}
70
71
72define i32 @test_i32_zero_undef(i32 %a) {
73; CHECK-LABEL: test_i32_zero_undef:
74; CHECK: rbit
75; CHECK: clz
76  %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 true)
77  ret i32 %tmp
78}
79
80define i64 @test_i64_zero_undef(i64 %a) {
81; CHECK-LABEL: test_i64_zero_undef:
82; CHECK: rbit
83; CHECK: rbit
84; CHECK: cmp
85; CHECK: clz
86; CHECK: add
87; CHECK: clzne
88  %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 true)
89  ret i64 %tmp
90}
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