remove useless test.

llvm-svn: 92782

llvm/test/Transforms/InstCombine/cast3.ll

-; RUN: opt < %s -instcombine -S | not grep getelementptr
-; PR2831
-
-; Don't raise arbitrary inttoptr+arithmetic+ptrtoint to getelementptr.
-
-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-f80:32:32"
-
-define i32 @main(i32 %argc, i8** %argv) nounwind {
-entry:
-	%0 = ptrtoint i8** %argv to i32		; <i32> [#uses=1]
-	%1 = add i32 %0, 1		; <i32> [#uses=1]
-	ret i32 %1
-}
-
-; This testcase could theoretically be optimized down to return zero,
-; but for now being conservative with ptrtoint/inttoptr is fine.
-define i32 @a() nounwind {
-entry:
-	%b = alloca i32		; <i32*> [#uses=3]
-	%a = alloca i32		; <i32*> [#uses=2]
-	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
-	store i32 1, i32* %b, align 4
-	%a1 = ptrtoint i32* %a to i32		; <i32> [#uses=1]
-	%b4 = ptrtoint i32* %b to i32		; <i32> [#uses=1]
-	%a7 = ptrtoint i32* %a to i32		; <i32> [#uses=1]
-	%0 = sub i32 %b4, %a7		; <i32> [#uses=1]
-	%1 = add i32 %a1, %0		; <i32> [#uses=1]
-	%2 = inttoptr i32 %1 to i32*		; <i32*> [#uses=1]
-	store i32 0, i32* %2, align 4
-	%3 = load i32* %b, align 4		; <i32> [#uses=1]
-	br label %return
-
-return:		; preds = %entry
-	ret i32 %3
-}