1 ; NOTE: This is a timeout test for some O(something silly) constant folding behaviour. It may not be the best test. Providing it finishes, it passes. 2 ; RUN: opt < %s -O3 -S | FileCheck %s 3 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" 4 target triple = "armv8-none-eabi" 5 6 %struct.ST = type { %struct.ST* } 7 8 @global = internal global [121 x i8] zeroinitializer, align 1 9 10 define void @func() #0 { 11 ;CHECK-LABEL: func 12 entry: 13 %s = alloca %struct.ST*, align 4 14 %j = alloca i32, align 4 15 store %struct.ST* bitcast ([121 x i8]* @global to %struct.ST*), %struct.ST** %s, align 4 16 store i32 0, i32* %j, align 4 17 br label %for.cond 18 19 for.cond: ; preds = %for.inc, %entry 20 %0 = load i32, i32* %j, align 4 21 %cmp = icmp slt i32 %0, 30 22 br i1 %cmp, label %for.body, label %for.end 23 24 for.body: ; preds = %for.cond 25 %1 = load %struct.ST*, %struct.ST** %s, align 4 26 %2 = bitcast %struct.ST* %1 to i8* 27 %add.ptr = getelementptr inbounds i8, i8* %2, i32 4 28 %3 = ptrtoint i8* %add.ptr to i32 29 %4 = load %struct.ST*, %struct.ST** %s, align 4 30 %5 = bitcast %struct.ST* %4 to i8* 31 %add.ptr1 = getelementptr inbounds i8, i8* %5, i32 4 32 %6 = ptrtoint i8* %add.ptr1 to i32 33 %rem = urem i32 %6, 2 34 %cmp2 = icmp eq i32 %rem, 0 35 br i1 %cmp2, label %cond.true, label %cond.false 36 37 cond.true: ; preds = %for.body 38 br label %cond.end 39 40 cond.false: ; preds = %for.body 41 %7 = load %struct.ST*, %struct.ST** %s, align 4 42 %8 = bitcast %struct.ST* %7 to i8* 43 %add.ptr3 = getelementptr inbounds i8, i8* %8, i32 4 44 %9 = ptrtoint i8* %add.ptr3 to i32 45 %rem4 = urem i32 %9, 2 46 br label %cond.end 47 48 cond.end: ; preds = %cond.false, %cond.true 49 %cond = phi i32 [ 0, %cond.true ], [ %rem4, %cond.false ] 50 %add = add i32 %3, %cond 51 %10 = inttoptr i32 %add to %struct.ST* 52 %11 = load %struct.ST*, %struct.ST** %s, align 4 53 %next = getelementptr inbounds %struct.ST, %struct.ST* %11, i32 0, i32 0 54 store %struct.ST* %10, %struct.ST** %next, align 4 55 %12 = load %struct.ST*, %struct.ST** %s, align 4 56 %next5 = getelementptr inbounds %struct.ST, %struct.ST* %12, i32 0, i32 0 57 %13 = load %struct.ST*, %struct.ST** %next5, align 4 58 store %struct.ST* %13, %struct.ST** %s, align 4 59 br label %for.inc 60 61 for.inc: ; preds = %cond.end 62 %14 = load i32, i32* %j, align 4 63 %inc = add nsw i32 %14, 1 64 store i32 %inc, i32* %j, align 4 65 br label %for.cond 66 67 for.end: ; preds = %for.cond 68 %15 = load %struct.ST*, %struct.ST** %s, align 4 69 %next6 = getelementptr inbounds %struct.ST, %struct.ST* %15, i32 0, i32 0 70 store %struct.ST* null, %struct.ST** %next6, align 4 71 ret void 72 } 73 74
