mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
106 lines
3.4 KiB
LLVM
106 lines
3.4 KiB
LLVM
; Test a pile of objectsize bounds checking.
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
; We need target data to get the sizes of the arrays and structures.
|
|
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"
|
|
|
|
@a = private global [60 x i8] zeroinitializer, align 1 ; <[60 x i8]*>
|
|
@.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
|
|
|
|
define i32 @foo() nounwind {
|
|
; CHECK: @foo
|
|
; CHECK-NEXT: ret i32 60
|
|
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
|
|
ret i32 %1
|
|
}
|
|
|
|
define i8* @bar() nounwind {
|
|
; CHECK: @bar
|
|
entry:
|
|
%retval = alloca i8*
|
|
%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
|
|
%cmp = icmp ne i32 %0, -1
|
|
; CHECK: br i1 true
|
|
br i1 %cmp, label %cond.true, label %cond.false
|
|
|
|
cond.true:
|
|
%1 = load i8** %retval
|
|
ret i8* %1
|
|
|
|
cond.false:
|
|
%2 = load i8** %retval
|
|
ret i8* %2
|
|
}
|
|
|
|
define i32 @f() nounwind {
|
|
; CHECK: @f
|
|
; CHECK-NEXT: ret i32 0
|
|
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr ([60 x i8]* @a, i32 1, i32 0), i1 false)
|
|
ret i32 %1
|
|
}
|
|
|
|
@window = external global [0 x i8]
|
|
|
|
define i1 @baz() nounwind {
|
|
; CHECK: @baz
|
|
; CHECK-NEXT: ret i1 true
|
|
%1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false)
|
|
%2 = icmp eq i32 %1, -1
|
|
ret i1 %2
|
|
}
|
|
|
|
define void @test1(i8* %q, i32 %x) nounwind noinline {
|
|
; CHECK: @test1
|
|
; CHECK: objectsize.i32
|
|
entry:
|
|
%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1]
|
|
%1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
|
|
br i1 %1, label %"47", label %"46"
|
|
|
|
"46": ; preds = %entry
|
|
unreachable
|
|
|
|
"47": ; preds = %entry
|
|
unreachable
|
|
}
|
|
|
|
@.str5 = private constant [9 x i32] [i32 97, i32 98, i32 99, i32 100, i32 0, i32
|
|
101, i32 102, i32 103, i32 0], align 4
|
|
define i32 @test2() nounwind {
|
|
; CHECK: @test2
|
|
; CHECK-NEXT: ret i32 34
|
|
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false)
|
|
ret i32 %1
|
|
}
|
|
|
|
; rdar://7674946
|
|
@array = internal global [480 x float] zeroinitializer ; <[480 x float]*> [#uses=1]
|
|
|
|
declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
|
|
|
|
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
|
|
|
|
declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
|
|
|
|
define void @test3() nounwind {
|
|
; CHECK: @test3
|
|
entry:
|
|
br i1 undef, label %bb11, label %bb12
|
|
|
|
bb11:
|
|
%0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
|
|
%1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
|
|
%2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) ; <i32> [#uses=1]
|
|
%3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
|
|
; CHECK: @__memcpy_chk
|
|
unreachable
|
|
|
|
bb12:
|
|
%4 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
|
|
%5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
|
|
%6 = call i8* @__inline_memcpy_chk(i8* %5, i8* undef, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
|
|
; CHECK: @__inline_memcpy_chk
|
|
unreachable
|
|
}
|
|
|
|
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
|