1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
; RUN: opt < %s -S -nvvm-reflect -nvvm-reflect-list USE_MUL=0 -O2 | FileCheck %s --check-prefix=USE_MUL_0
; RUN: opt < %s -S -nvvm-reflect -nvvm-reflect-list USE_MUL=1 -O2 | FileCheck %s --check-prefix=USE_MUL_1
@str = private unnamed_addr addrspace(4) constant [8 x i8] c"USE_MUL\00"
declare i32 @__nvvm_reflect(i8*)
declare i8* @llvm.nvvm.ptr.constant.to.gen.p0i8.p4i8(i8 addrspace(4)*)
define float @foo(float %a, float %b) {
; USE_MUL_0: define float @foo
; USE_MUL_0-NOT: call i32 @__nvvm_reflect
; USE_MUL_1: define float @foo
; USE_MUL_1-NOT: call i32 @__nvvm_reflect
%ptr = tail call i8* @llvm.nvvm.ptr.constant.to.gen.p0i8.p4i8(i8 addrspace(4)* getelementptr inbounds ([8 x i8], [8 x i8] addrspace(4)* @str, i32 0, i32 0))
%reflect = tail call i32 @__nvvm_reflect(i8* %ptr)
%cmp = icmp ugt i32 %reflect, 0
br i1 %cmp, label %use_mul, label %use_add
use_mul:
; USE_MUL_1: fmul float %a, %b
; USE_MUL_0-NOT: fadd float %a, %b
%ret1 = fmul float %a, %b
br label %exit
use_add:
; USE_MUL_0: fadd float %a, %b
; USE_MUL_1-NOT: fmul float %a, %b
%ret2 = fadd float %a, %b
br label %exit
exit:
%ret = phi float [%ret1, %use_mul], [%ret2, %use_add]
ret float %ret
}
declare i32 @llvm.nvvm.reflect.p0i8(i8*)
; USE_MUL_0: define i32 @intrinsic
; USE_MUL_1: define i32 @intrinsic
define i32 @intrinsic() {
; USE_MUL_0-NOT: call i32 @llvm.nvvm.reflect
; USE_MUL_0: ret i32 0
; USE_MUL_1-NOT: call i32 @llvm.nvvm.reflect
; USE_MUL_1: ret i32 1
%ptr = tail call i8* @llvm.nvvm.ptr.constant.to.gen.p0i8.p4i8(i8 addrspace(4)* getelementptr inbounds ([8 x i8], [8 x i8] addrspace(4)* @str, i32 0, i32 0))
%reflect = tail call i32 @llvm.nvvm.reflect.p0i8(i8* %ptr)
ret i32 %reflect
}
; CUDA-7.0 passes __nvvm_reflect argument slightly differently.
; Verify that it works, too
@"$str" = private addrspace(1) constant [8 x i8] c"USE_MUL\00"
define float @bar(float %a, float %b) {
; USE_MUL_0: define float @bar
; USE_MUL_0-NOT: call i32 @__nvvm_reflect
; USE_MUL_1: define float @bar
; USE_MUL_1-NOT: call i32 @__nvvm_reflect
%reflect = call i32 @__nvvm_reflect(i8* addrspacecast (i8 addrspace(1)* getelementptr inbounds ([8 x i8], [8 x i8] addrspace(1)* @"$str", i32 0, i32 0) to i8*))
%cmp = icmp ne i32 %reflect, 0
br i1 %cmp, label %use_mul, label %use_add
use_mul:
; USE_MUL_1: fmul float %a, %b
; USE_MUL_0-NOT: fadd float %a, %b
%ret1 = fmul float %a, %b
br label %exit
use_add:
; USE_MUL_0: fadd float %a, %b
; USE_MUL_1-NOT: fmul float %a, %b
%ret2 = fadd float %a, %b
br label %exit
exit:
%ret = phi float [%ret1, %use_mul], [%ret2, %use_add]
ret float %ret
}
|
