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MdePkg/BaseUefiDecompressLib: Improve performance of boundary validation 

The boundary validation checking in MakeTable() performs on
every loop iteration. This could be improved by checking
just once before the loop.
https://bugzilla.tianocore.org/show_bug.cgi?id=1329

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Shenglei Zhang 2019-02-25 13:55:54 +08:00 committed by Liming Gao
parent 55756c88ae
commit 8028f03032
1 changed files with 4 additions and 3 deletions
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7
MdePkg/Library/BaseUefiDecompressLib/BaseUefiDecompressLib.c
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@ -222,10 +222,11 @@ MakeTable (
if (Len <= TableBits) {
if (Start[Len] >= NextCode || NextCode > MaxTableLength){
return (UINT16) BAD_TABLE;
}
for (Index = Start[Len]; Index < NextCode; Index++) {
if (Index >= MaxTableLength) {
return (UINT16) BAD_TABLE;
}
Table[Index] = Char;
}