1 ; RUN: opt < %s -gvn -S | FileCheck %s
3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
4 target triple = "i386-apple-darwin7"
6 define i32 @test1(i32* %b, i32* %c) nounwind {
10 %t1 = icmp eq i32* %b, null
11 br i1 %t1, label %bb, label %bb1
14 %t2 = load i32* %c, align 4
16 store i32 %t3, i32* %g, align 4
20 %t5 = load i32* %b, align 4
22 store i32 %t6, i32* %g, align 4
25 bb2: ; preds = %bb1, %bb
26 %c_addr.0 = phi i32* [ %g, %bb1 ], [ %c, %bb ]
27 %b_addr.0 = phi i32* [ %b, %bb1 ], [ %g, %bb ]
28 %cv = load i32* %c_addr.0, align 4
29 %bv = load i32* %b_addr.0, align 4
30 ; CHECK: %bv = phi i32
31 ; CHECK: %cv = phi i32
34 %ret = add i32 %cv, %bv
38 define i8 @test2(i1 %cond, i32* %b, i32* %c) nounwind {
41 br i1 %cond, label %bb, label %bb1
44 %b1 = bitcast i32* %b to i8*
49 %c1 = bitcast i32* %c to i8*
54 %d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
55 %d1 = bitcast i32* %d to i8*
57 ; CHECK: %dv = phi i8 [ 92, %bb1 ], [ 4, %bb ]
63 define i32 @test3(i1 %cond, i32* %b, i32* %c) nounwind {
66 br i1 %cond, label %bb, label %bb1
69 %b1 = getelementptr i32* %b, i32 17
74 %c1 = getelementptr i32* %c, i32 7
75 store i32 82, i32* %c1
79 %d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
80 %i = phi i32 [ 7, %bb1 ], [ 17, %bb ]
81 %d1 = getelementptr i32* %d, i32 %i
83 ; CHECK: %dv = phi i32 [ 82, %bb1 ], [ 4, %bb ]
90 define i32 @test4(i1 %cond, i32* %b, i32* %c) nounwind {
93 br i1 %cond, label %bb, label %bb1
100 %c1 = getelementptr i32* %c, i32 7
101 store i32 82, i32* %c1
105 %d = phi i32* [ %c, %bb1 ], [ %b, %bb ]
106 %i = phi i32 [ 7, %bb1 ], [ 0, %bb ]
107 %d1 = getelementptr i32* %d, i32 %i
109 ; CHECK: %dv = phi i32 [ 82, %bb1 ], [ 4, %bb ]
117 ; void test5(int N, double* G) {
118 ; for (long j = 1; j < 1000; j++)
119 ; G[j] = G[j] + G[j-1];
122 ; Should compile into one load in the loop.
123 define void @test5(i32 %N, double* nocapture %G) nounwind ssp {
129 %indvar = phi i64 [ 0, %bb.nph ], [ %tmp, %for.body ]
130 %arrayidx6 = getelementptr double* %G, i64 %indvar
131 %tmp = add i64 %indvar, 1
132 %arrayidx = getelementptr double* %G, i64 %tmp
133 %tmp3 = load double* %arrayidx
134 %tmp7 = load double* %arrayidx6
135 %add = fadd double %tmp3, %tmp7
136 store double %add, double* %arrayidx
137 %exitcond = icmp eq i64 %tmp, 999
138 br i1 %exitcond, label %for.end, label %for.body
142 ; CHECK-NOT: load double