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comparison test/Transforms/IndVarSimplify/promote-iv-to-eliminate-casts.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
comparison
equal deleted inserted replaced
-1:000000000000 0:95c75e76d11b
1 ; RUN: opt < %s -indvars -S > %t
2 ; RUN: not grep sext %t
3
4 define i64 @test(i64* nocapture %first, i32 %count) nounwind readonly {
5 entry:
6 %t0 = icmp sgt i32 %count, 0 ; <i1> [#uses=1]
7 br i1 %t0, label %bb.nph, label %bb2
8
9 bb.nph: ; preds = %entry
10 br label %bb
11
12 bb: ; preds = %bb1, %bb.nph
13 %result.02 = phi i64 [ %t5, %bb1 ], [ 0, %bb.nph ] ; <i64> [#uses=1]
14 %n.01 = phi i32 [ %t6, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=2]
15 %t1 = sext i32 %n.01 to i64 ; <i64> [#uses=1]
16 %t2 = getelementptr i64* %first, i64 %t1 ; <i64*> [#uses=1]
17 %t3 = load i64* %t2, align 8 ; <i64> [#uses=1]
18 %t4 = lshr i64 %t3, 4 ; <i64> [#uses=1]
19 %t5 = add i64 %t4, %result.02 ; <i64> [#uses=2]
20 %t6 = add i32 %n.01, 1 ; <i32> [#uses=2]
21 br label %bb1
22
23 bb1: ; preds = %bb
24 %t7 = icmp slt i32 %t6, %count ; <i1> [#uses=1]
25 br i1 %t7, label %bb, label %bb1.bb2_crit_edge
26
27 bb1.bb2_crit_edge: ; preds = %bb1
28 %.lcssa = phi i64 [ %t5, %bb1 ] ; <i64> [#uses=1]
29 br label %bb2
30
31 bb2: ; preds = %bb1.bb2_crit_edge, %entry
32 %result.0.lcssa = phi i64 [ %.lcssa, %bb1.bb2_crit_edge ], [ 0, %entry ] ; <i64> [#uses=1]
33 ret i64 %result.0.lcssa
34 }
35
36 define void @foo(i16 signext %N, i32* nocapture %P) nounwind {
37 entry:
38 %t0 = icmp sgt i16 %N, 0 ; <i1> [#uses=1]
39 br i1 %t0, label %bb.nph, label %return
40
41 bb.nph: ; preds = %entry
42 br label %bb
43
44 bb: ; preds = %bb1, %bb.nph
45 %i.01 = phi i16 [ %t3, %bb1 ], [ 0, %bb.nph ] ; <i16> [#uses=2]
46 %t1 = sext i16 %i.01 to i64 ; <i64> [#uses=1]
47 %t2 = getelementptr i32* %P, i64 %t1 ; <i32*> [#uses=1]
48 store i32 123, i32* %t2, align 4
49 %t3 = add i16 %i.01, 1 ; <i16> [#uses=2]
50 br label %bb1
51
52 bb1: ; preds = %bb
53 %t4 = icmp slt i16 %t3, %N ; <i1> [#uses=1]
54 br i1 %t4, label %bb, label %bb1.return_crit_edge
55
56 bb1.return_crit_edge: ; preds = %bb1
57 br label %return
58
59 return: ; preds = %bb1.return_crit_edge, %entry
60 ret void
61 }
62
63 ; Test cases from PR1301:
64
65 define void @kinds__srangezero([21 x i32]* nocapture %a) nounwind {
66 bb.thread:
67 br label %bb
68
69 bb: ; preds = %bb, %bb.thread
70 %i.0.reg2mem.0 = phi i8 [ -10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
71 %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
72 %tmp4 = add i32 %tmp12, 10 ; <i32> [#uses=1]
73 %tmp5 = getelementptr [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
74 store i32 0, i32* %tmp5
75 %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
76 %0 = icmp sgt i8 %tmp7, 10 ; <i1> [#uses=1]
77 br i1 %0, label %return, label %bb
78
79 return: ; preds = %bb
80 ret void
81 }
82
83 define void @kinds__urangezero([21 x i32]* nocapture %a) nounwind {
84 bb.thread:
85 br label %bb
86
87 bb: ; preds = %bb, %bb.thread
88 %i.0.reg2mem.0 = phi i8 [ 10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
89 %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
90 %tmp4 = add i32 %tmp12, -10 ; <i32> [#uses=1]
91 %tmp5 = getelementptr [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
92 store i32 0, i32* %tmp5
93 %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
94 %0 = icmp sgt i8 %tmp7, 30 ; <i1> [#uses=1]
95 br i1 %0, label %return, label %bb
96
97 return: ; preds = %bb
98 ret void
99 }