1 ; RUN: opt < %s -bounds-checking -S | FileCheck %s 2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 3 4 @global = private unnamed_addr constant [10 x i8] c"ola\00mundo\00", align 1 5 6 ; CHECK: f1 7 ; no checks are possible here 8 ; CHECK-NOT: trap 9 define void @f1(i8* nocapture %c) { 10 entry: 11 %0 = load i8* %c, align 1 12 %tobool1 = icmp eq i8 %0, 0 13 br i1 %tobool1, label %while.end, label %while.body 14 15 while.body: 16 %c.addr.02 = phi i8* [ %incdec.ptr, %while.body ], [ %c, %entry ] 17 %incdec.ptr = getelementptr inbounds i8* %c.addr.02, i64 -1 18 store i8 100, i8* %c.addr.02, align 1 19 %1 = load i8* %incdec.ptr, align 1 20 %tobool = icmp eq i8 %1, 0 21 br i1 %tobool, label %while.end, label %while.body 22 23 while.end: 24 ret void 25 } 26 27 28 ; CHECK: f2 29 define void @f2() { 30 while.body.i.preheader: 31 %addr = getelementptr inbounds [10 x i8]* @global, i64 0, i64 9 32 br label %while.body.i 33 34 while.body.i: 35 ; CHECK: phi 36 ; CHECK-NEXT: phi 37 ; CHECK-NOT: phi 38 %c.addr.02.i = phi i8* [ %incdec.ptr.i, %while.body.i ], [ %addr, %while.body.i.preheader ] 39 %incdec.ptr.i = getelementptr inbounds i8* %c.addr.02.i, i64 -1 40 ; CHECK: sub i64 10, %0 41 ; CHECK-NEXT: icmp ult i64 10, %0 42 ; CHECK-NEXT: icmp ult i64 {{.*}}, 1 43 ; CHECK-NEXT: or i1 44 ; CHECK-NEXT: br {{.*}}, label %trap 45 store i8 100, i8* %c.addr.02.i, align 1 46 %0 = load i8* %incdec.ptr.i, align 1 47 %tobool.i = icmp eq i8 %0, 0 48 br i1 %tobool.i, label %fn.exit, label %while.body.i 49 50 fn.exit: 51 ret void 52 } 53
