This really only affects pointers in high memory, and only llvm 1.9, but make a regression for it anyway

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34014 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2007-02-07 22:23:47 +00:00
parent bd8251a9a6
commit 7914f46db1

View File

@ -0,0 +1,28 @@
;RUN: llvm-upgrade < %s | llvm-as | opt -instcombine |llvm-dis |grep zext
;Make sure the uint isn't removed.
;instcombine in llvm 1.9 was dropping the uint cast which was causing a sign
;extend
;this only affected code with pointers in the high half of memory, so it wasn't
;noticed much :)
;compile a kernel though...
target datalayout = "e-p:32:32"
target endian = little
target pointersize = 32
%str = internal constant [6 x sbyte] c"%llx\0A\00"
implementation ; Functions:
declare int %printf(sbyte*, ...)
int %main(int %x, sbyte** %a) {
entry:
%tmp = getelementptr [6 x sbyte]* %str, int 0, uint 0
%tmp1 = load sbyte** %a
%tmp2 = cast sbyte* %tmp1 to uint ; <uint> [#uses=1]
%tmp3 = cast uint %tmp2 to long ; <long> [#uses=1]
%tmp = call int (sbyte*, ...)* %printf( sbyte* %tmp, long %tmp3 )
ret int 0
}