2009-03-03-BTHang.ll
1.5 KB
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; RUN: llc < %s -mtriple=i686--
; rdar://6642541
%struct.HandleBlock = type { [30 x i32], [990 x i8*], %struct.HandleBlockTrailer }
%struct.HandleBlockTrailer = type { %struct.HandleBlock* }
define hidden zeroext i8 @IsHandleAllocatedFromPool(i8** %h) nounwind optsize {
entry:
%0 = ptrtoint i8** %h to i32 ; <i32> [#uses=2]
%1 = and i32 %0, -4096 ; <i32> [#uses=1]
%2 = inttoptr i32 %1 to %struct.HandleBlock* ; <%struct.HandleBlock*> [#uses=3]
%3 = getelementptr %struct.HandleBlock, %struct.HandleBlock* %2, i32 0, i32 0, i32 0 ; <i32*> [#uses=1]
%4 = load i32, i32* %3, align 4096 ; <i32> [#uses=1]
%5 = icmp eq i32 %4, 1751280747 ; <i1> [#uses=1]
br i1 %5, label %bb, label %bb1
bb: ; preds = %entry
%6 = getelementptr %struct.HandleBlock, %struct.HandleBlock* %2, i32 0, i32 1 ; <[990 x i8*]*> [#uses=1]
%7 = ptrtoint [990 x i8*]* %6 to i32 ; <i32> [#uses=1]
%8 = sub i32 %0, %7 ; <i32> [#uses=2]
%9 = lshr i32 %8, 2 ; <i32> [#uses=1]
%10 = ashr i32 %8, 7 ; <i32> [#uses=1]
%11 = and i32 %10, 134217727 ; <i32> [#uses=1]
%12 = getelementptr %struct.HandleBlock, %struct.HandleBlock* %2, i32 0, i32 0, i32 %11 ; <i32*> [#uses=1]
%not.i = and i32 %9, 31 ; <i32> [#uses=1]
%13 = xor i32 %not.i, 31 ; <i32> [#uses=1]
%14 = shl i32 1, %13 ; <i32> [#uses=1]
%15 = load i32, i32* %12, align 4 ; <i32> [#uses=1]
%16 = and i32 %15, %14 ; <i32> [#uses=1]
%17 = icmp eq i32 %16, 0 ; <i1> [#uses=1]
%tmp = zext i1 %17 to i8 ; <i8> [#uses=1]
ret i8 %tmp
bb1: ; preds = %entry
ret i8 0
}