basic.ll
2.19 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
; RUN: opt -S -loop-rotate < %s | FileCheck %s
; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
; RUN: opt -S -passes='require<targetir>,require<assumptions>,loop(loop-rotate)' < %s | FileCheck %s
; RUN: opt -S -passes='require<targetir>,require<assumptions>,loop-mssa(loop-rotate)' -verify-memoryssa < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
; PR5319 - The "arrayidx" gep should be hoisted, not duplicated. We should
; end up with one phi node.
define void @test1() nounwind ssp {
; CHECK-LABEL: @test1(
entry:
%array = alloca [20 x i32], align 16
br label %for.cond
for.cond: ; preds = %for.body, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%cmp = icmp slt i32 %i.0, 100
%arrayidx = getelementptr inbounds [20 x i32], [20 x i32]* %array, i64 0, i64 0
br i1 %cmp, label %for.body, label %for.end
; CHECK: for.body:
; CHECK-NEXT: phi i32 [ 0
; CHECK-NEXT: store i32 0
for.body: ; preds = %for.cond
store i32 0, i32* %arrayidx, align 16
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
%arrayidx.lcssa = phi i32* [ %arrayidx, %for.cond ]
call void @g(i32* %arrayidx.lcssa) nounwind
ret void
}
declare void @g(i32*)
; CHECK-LABEL: @test2(
define void @test2() nounwind ssp {
entry:
%array = alloca [20 x i32], align 16
br label %for.cond
for.cond: ; preds = %for.body, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%cmp = icmp slt i32 %i.0, 100
; CHECK: call void @f
; CHECK-NOT: call void @f
call void @f() noduplicate
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%inc = add nsw i32 %i.0, 1
call void @h()
br label %for.cond
for.end: ; preds = %for.cond
ret void
; CHECK: }
}
declare void @f() noduplicate
declare void @h()