| Nuno Lopes | adf1c85 | 2012-06-01 17:43:31 +0000 | [diff] [blame] | 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-NEXT: phi |
| 38 | ; CHECK: trap |
| 39 | %c.addr.02.i = phi i8* [ %incdec.ptr.i, %while.body.i ], [ %addr, %while.body.i.preheader ] |
| 40 | %incdec.ptr.i = getelementptr inbounds i8* %c.addr.02.i, i64 -1 |
| 41 | store i8 100, i8* %c.addr.02.i, align 1 |
| 42 | %0 = load i8* %incdec.ptr.i, align 1 |
| 43 | %tobool.i = icmp eq i8 %0, 0 |
| 44 | br i1 %tobool.i, label %fn.exit, label %while.body.i |
| 45 | |
| 46 | fn.exit: |
| 47 | ret void |
| 48 | } |