1; Test the complex GetElementPtr instruction handling in the EfficiencySanitizer 2; cache fragmentation tool. 3; 4; RUN: opt < %s -esan -esan-cache-frag -S | FileCheck %s 5 6; Code from http://llvm.org/docs/LangRef.html#getelementptr-instruction 7; struct RT { 8; char A; 9; int B[10][20]; 10; char C; 11; }; 12; struct ST { 13; int X; 14; double Y; 15; struct RT Z; 16; }; 17; 18; int *foo(struct ST *s) { 19; return &s[1].Z.B[5][13]; 20; } 21 22%struct.RT = type { i8, [10 x [20 x i32]], i8 } 23%struct.ST = type { i32, double, %struct.RT } 24 25define i32* @foo(%struct.ST* %s) nounwind uwtable readnone optsize ssp { 26entry: 27 %arrayidx = getelementptr inbounds %struct.ST, %struct.ST* %s, i64 1, i32 2, i32 1, i64 5, i64 13 28 ret i32* %arrayidx 29} 30 31; CHECK: %0 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.ST#3#13#3#11", i32 0, i32 3) 32; CHECK-NEXT: %1 = add i64 %0, 1 33; CHECK-NEXT: store i64 %1, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.ST#3#13#3#11", i32 0, i32 3) 34; CHECK-NEXT: %2 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.ST#3#13#3#11", i32 0, i32 2) 35; CHECK-NEXT: %3 = add i64 %2, 1 36; CHECK-NEXT: store i64 %3, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.ST#3#13#3#11", i32 0, i32 2) 37; CHECK-NEXT: %4 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.RT#3#11#14#11", i32 0, i32 1) 38; CHECK-NEXT: %5 = add i64 %4, 1 39; CHECK-NEXT: store i64 %5, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @"struct.RT#3#11#14#11", i32 0, i32 1) 40; CHECK-NEXT: %arrayidx = getelementptr inbounds %struct.ST, %struct.ST* %s, i64 1, i32 2, i32 1, i64 5, i64 13 41; CHECK-NEXT: ret i32* %arrayidx 42