single-loop.ll
2.98 KB
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
80
81
82
83
84
85
86
87
88
89
90
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
; RUN: opt %loadPolly -polly-ast -analyze < %s | FileCheck %s --check-prefix=AST
;
; This only works after the post-dominator tree has been fixed.
;
; XFAIL: *
;
; void exception() __attribute__((noreturn));
;
; void foo(long n, float A[100]) {
; for (long i = 0; i < n; i++) {
; if (i < 0)
; exception();
;
; if (i >= 100)
; exception();
;
; A[i] += i;
; }
; }
; We should detect this kernel as a SCoP and derive run-time conditions such
; that the bound-checked blocks are not part of the optimized SCoP.
; CHECK: Invalid Context:
; CHECK: [n] -> { : n >= 101 }
; AST: if (1 && 0 == n >= 101)
; AST: for (int c0 = 0; c0 < n; c0 += 1)
; AST: Stmt_if_end_4(c0);
;
; AST-NOT: for
; AST-NOT: Stmt
;
; AST: else
; AST: { /* original code */ }
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Function Attrs: nounwind uwtable
define void @foo(i64 %n, float* %A) #0 {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i64 [ 0, %entry ], [ %inc, %for.inc ]
%cmp = icmp slt i64 %i.0, %n
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
br i1 false, label %if.then, label %if.end
if.then: ; preds = %for.body
call void (...) @exception() #2
unreachable
if.end: ; preds = %for.body
%cmp2 = icmp sgt i64 %i.0, 99
br i1 %cmp2, label %if.then.3, label %if.end.4
if.then.3: ; preds = %if.end
call void (...) @exception() #2
unreachable
if.end.4: ; preds = %if.end
%conv = sitofp i64 %i.0 to float
%arrayidx = getelementptr inbounds float, float* %A, i64 %i.0
%tmp = load float, float* %arrayidx, align 4
%add = fadd float %tmp, %conv
store float %add, float* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %if.end.4
%inc = add nuw nsw i64 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
; Function Attrs: noreturn
declare void @exception(...) #1
attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { noreturn "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { noreturn nounwind }
!llvm.ident = !{!0}
!0 = !{!"clang version 3.8.0 (trunk 246853)"}