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
| ; RUN: opt < %s -instcombine -S | FileCheck %s
define void @test(float* %a, float* readnone %a_end, i64 %b, float* %bf) unnamed_addr {
entry:
%cmp1 = icmp ult float* %a, %a_end
%b.float = inttoptr i64 %b to float*
br i1 %cmp1, label %bb1, label %bb2
bb1:
br label %for.body.preheader
bb2:
%bfi = ptrtoint float* %bf to i64
br label %for.body.preheader
for.body.preheader: ; preds = %entry
%b.phi = phi i64 [%b, %bb1], [%bfi, %bb2]
br label %for.body
; CHECK: for.body.preheader
; CHECK: %b.phi = phi
; CHECK: %b.phi.ptr =
; CHECK: br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
; CHECK: for.body
%a.addr.03 = phi float* [ %incdec.ptr, %for.body ], [ %a, %for.body.preheader ]
%b.addr.float = phi float* [ %b.addr.float.inc, %for.body ], [ %b.float, %for.body.preheader ]
%b.addr.i64 = phi i64 [ %b.addr.i64.inc, %for.body ], [ %b.phi, %for.body.preheader ]
; CHECK: %a.addr.03 = phi float* [ %incdec.ptr, %for.body ], [ %a, %for.body.preheader ]
; CHECK-NEXT: %b.addr.float = phi float* [ %b.addr.float.inc, %for.body ], [ %b.float, %for.body.preheader ]
; CHECK-NEXT: %b.addr.i64.ptr = phi
; CHECK-NOT: = phi i64
; CHECK: = load
%l = load float, float* %b.addr.float, align 4
%mul.i = fmul float %l, 4.200000e+01
store float %mul.i, float* %a.addr.03, align 4
%b.addr.float.2 = inttoptr i64 %b.addr.i64 to float*
%b.addr.float.inc = getelementptr inbounds float, float* %b.addr.float.2, i64 1
; CHECK: store float %mul.i
; CHECK-NOT: inttoptr
; CHECK: %b.addr.float.inc =
%b.addr.i64.inc = ptrtoint float* %b.addr.float.inc to i64
; CHECK-NOT: ptrtoint
%incdec.ptr = getelementptr inbounds float, float* %a.addr.03, i64 1
; CHECK: %incdec.ptr =
%cmp = icmp ult float* %incdec.ptr, %a_end
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
}
|