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Make the results for the rotate functions correct when rotateAmt == 0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2007-05-14 00:15:28 +00:00
parent 19dc32a2d4
commit 69944e85aa
1 changed files with 4 additions and 0 deletions
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4
lib/Support/APInt.cpp
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@@ -1249,6 +1249,8 @@ APInt APInt::shl(uint32_t shiftAmt) const {
} }
APInt APInt::rotl(uint32_t rotateAmt) const { APInt APInt::rotl(uint32_t rotateAmt) const {
if (rotateAmt == 0)
return *this;
// Don't get too fancy, just use existing shift/or facilities // Don't get too fancy, just use existing shift/or facilities
APInt hi(*this); APInt hi(*this);
APInt lo(*this); APInt lo(*this);
@@ -1258,6 +1260,8 @@ APInt APInt::rotl(uint32_t rotateAmt) const {
} }
APInt APInt::rotr(uint32_t rotateAmt) const { APInt APInt::rotr(uint32_t rotateAmt) const {
if (rotateAmt == 0)
return *this;
// Don't get too fancy, just use existing shift/or facilities // Don't get too fancy, just use existing shift/or facilities
APInt hi(*this); APInt hi(*this);
APInt lo(*this); APInt lo(*this);