f89f7da999
The "null-pointer-is-valid" attribute needs to be checked by many pointer-related combines. To make the check more efficient, convert it from a string into an enum attribute. In the future, this attribute may be replaced with data layout properties. Differential Revision: https://reviews.llvm.org/D78862
32 lines
1.1 KiB
LLVM
32 lines
1.1 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
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"
|
|
target triple = "x86_64-apple-darwin10.0.0"
|
|
|
|
define void @func(i8* %i) nounwind ssp {
|
|
; CHECK-LABEL: @func(
|
|
; CHECK: @__strcpy_chk(i8* nonnull %arraydecay, i8* %i, i64 32)
|
|
entry:
|
|
%s = alloca [32 x i8], align 16
|
|
%arraydecay = getelementptr inbounds [32 x i8], [32 x i8]* %s, i32 0, i32 0
|
|
%call = call i8* @__strcpy_chk(i8* %arraydecay, i8* %i, i64 32)
|
|
call void @func2(i8* %arraydecay)
|
|
ret void
|
|
}
|
|
|
|
define void @func_no_null_opt(i8* %i) nounwind ssp #0 {
|
|
; CHECK-LABEL: @func_no_null_opt(
|
|
; CHECK: @__strcpy_chk(i8* %arraydecay, i8* %i, i64 32)
|
|
entry:
|
|
%s = alloca [32 x i8], align 16
|
|
%arraydecay = getelementptr inbounds [32 x i8], [32 x i8]* %s, i32 0, i32 0
|
|
%call = call i8* @__strcpy_chk(i8* %arraydecay, i8* %i, i64 32)
|
|
call void @func2(i8* %arraydecay)
|
|
ret void
|
|
}
|
|
|
|
declare i8* @__strcpy_chk(i8*, i8*, i64) nounwind
|
|
|
|
declare void @func2(i8*)
|
|
|
|
attributes #0 = { null_pointer_is_valid }
|