1; RUN: opt < %s -globalopt -S | FileCheck %s 2target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" 3 4 %struct.foo = type { i32, i32 } 5@X = internal global %struct.foo* null 6; CHECK: @X.f0 7; CHECK: @X.f1 8 9define void @bar(i64 %Size) nounwind noinline { 10entry: 11 %mallocsize = mul i64 %Size, 8 ; <i64> [#uses=1] 12 %malloccall = tail call i8* @malloc(i64 %mallocsize) ; <i8*> [#uses=1] 13 %.sub = bitcast i8* %malloccall to %struct.foo* ; <%struct.foo*> [#uses=1] 14 store %struct.foo* %.sub, %struct.foo** @X, align 4 15 ret void 16} 17 18declare noalias i8* @malloc(i64) 19 20define i32 @baz() nounwind readonly noinline { 21bb1.thread: 22 %0 = load %struct.foo*, %struct.foo** @X, align 4 23 br label %bb1 24 25bb1: ; preds = %bb1, %bb1.thread 26 %i.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %indvar.next, %bb1 ] 27 %sum.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %3, %bb1 ] 28 %1 = getelementptr %struct.foo, %struct.foo* %0, i32 %i.0.reg2mem.0, i32 0 29 %2 = load i32, i32* %1, align 4 30 %3 = add i32 %2, %sum.0.reg2mem.0 31 %indvar.next = add i32 %i.0.reg2mem.0, 1 32 %exitcond = icmp eq i32 %indvar.next, 1200 33 br i1 %exitcond, label %bb2, label %bb1 34 35bb2: ; preds = %bb1 36 ret i32 %3 37} 38 39define void @bam(i64 %Size) nounwind noinline #0 { 40entry: 41 %0 = load %struct.foo*, %struct.foo** @X, align 4 42 ret void 43} 44 45attributes #0 = { "null-pointer-is-valid"="true" } 46