llvm-6502/test/Analysis/LoadVN/dependent_loads.ll
Tanya Lattner dcd188d33f Remove llvm-upgrade.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47110 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 06:56:27 +00:00

26 lines
941 B
LLVM

; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | \
; RUN: llvm-dis | not grep sub
%S = type { i32, i8 }
define i8 @test(i8** %P) {
%A = load i8** %P ; <i8*> [#uses=1]
%B = load i8* %A ; <i8> [#uses=1]
%X = load i8** %P ; <i8*> [#uses=1]
%Y = load i8* %X ; <i8> [#uses=1]
%R = sub i8 %B, %Y ; <i8> [#uses=1]
ret i8 %R
}
define i8 @test1(%S** %P) {
%A = load %S** %P ; <%S*> [#uses=1]
%B = getelementptr %S* %A, i32 0, i32 1 ; <i8*> [#uses=1]
%C = load i8* %B ; <i8> [#uses=1]
%X = load %S** %P ; <%S*> [#uses=1]
%Y = getelementptr %S* %X, i32 0, i32 1 ; <i8*> [#uses=1]
%Z = load i8* %Y ; <i8> [#uses=1]
%R = sub i8 %C, %Z ; <i8> [#uses=1]
ret i8 %R
}