-; RUN: llvm-upgrade < %s | llvm-as | opt -scalarrepl -mem2reg | llvm-dis | grep alloca
+; RUN: opt < %s -scalarrepl -S | FileCheck %s
-int %test() {
- %X = alloca [ 4 x int ]
- %Y = getelementptr [4x int]* %X, long 0, long 6 ; Off end of array!
- store int 0, int* %Y
+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-f80:32:32-n8:16:32"
+target triple = "i386-pc-linux-gnu"
- %Z = load int* %Y
- ret int %Z
+
+; PR3466
+; Off end of array, don't transform.
+define i32 @test1() {
+; CHECK: @test1
+; CHECK-NOT: = alloca
+ %X = alloca [4 x i32]
+ %Y = getelementptr [4 x i32]* %X, i64 0, i64 6 ; <i32*> [#uses=2]
+ store i32 0, i32* %Y
+ %Z = load i32* %Y ; <i32> [#uses=1]
+ ret i32 %Z
+}
+
+
+; Off end of array, don't transform.
+define i32 @test2() nounwind {
+entry:
+; CHECK: @test2
+; CHECK-NOT: = alloca
+ %yx2.i = alloca float, align 4 ; <float*> [#uses=1]
+ %yx26.i = bitcast float* %yx2.i to i64* ; <i64*> [#uses=1]
+ %0 = load i64* %yx26.i, align 8 ; <i64> [#uses=0]
+ unreachable
+}
+
+%base = type { i32, [0 x i8] }
+%padded = type { %base, [1 x i32] }
+
+; PR5436
+define void @test3() {
+entry:
+; CHECK: @test3
+; CHECK-NOT: = alloca
+; CHECK: store i64
+ %var_1 = alloca %padded, align 8 ; <%padded*> [#uses=3]
+ %0 = getelementptr inbounds %padded* %var_1, i32 0, i32 0 ; <%base*> [#uses=2]
+
+ %p2 = getelementptr inbounds %base* %0, i32 0, i32 1, i32 0 ; <i8*> [#uses=1]
+ store i8 72, i8* %p2, align 1
+
+ ; 72 -> a[0].
+
+ %callret = call %padded *@test3f() ; <i32> [#uses=2]
+ %callretcast = bitcast %padded* %callret to i8* ; <i8*> [#uses=1]
+ %var_11 = bitcast %padded* %var_1 to i8* ; <i8*> [#uses=1]
+ call void @llvm.memcpy.i32(i8* %callretcast, i8* %var_11, i32 8, i32 4)
+ ret void
}
+
+declare void @llvm.memcpy.i32(i8* nocapture, i8* nocapture, i32, i32) nounwind
+
+declare %padded* @test3f()