1 ; Test objectsize bounds checking that won't verify until after -instcombine. 2 ; RUN: opt < %s -disable-verify -instcombine -S | opt -S | FileCheck %s 3 ; We need target data to get the sizes of the arrays and structures. 4 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 5 6 declare i32 @llvm.objectsize.i32.p0i8(i8*, i1) nounwind readonly 7 8 ; CHECK-LABEL: @PR13390( 9 define i32 @PR13390(i1 %bool, i8* %a) { 10 entry: 11 %cond = or i1 %bool, true 12 br i1 %cond, label %return, label %xpto 13 14 xpto: 15 %select = select i1 %bool, i8* %select, i8* %a 16 %select2 = select i1 %bool, i8* %a, i8* %select2 17 %0 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select, i1 true) 18 %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select2, i1 true) 19 %2 = add i32 %0, %1 20 ; CHECK: ret i32 undef 21 ret i32 %2 22 23 return: 24 ret i32 42 25 } 26 27 ; CHECK-LABEL: @PR13621( 28 define i32 @PR13621(i1 %bool) nounwind { 29 entry: 30 %cond = or i1 %bool, true 31 br i1 %cond, label %return, label %xpto 32 33 ; technically reachable, but this malformed IR may appear as a result of constant propagation 34 xpto: 35 %gep2 = getelementptr i8, i8* %gep, i32 1 36 %gep = getelementptr i8, i8* %gep2, i32 1 37 %o = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 true) 38 ; CHECK: ret i32 undef 39 ret i32 %o 40 41 return: 42 ret i32 7 43 } 44
