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authorDan Gohman <gohman@apple.com>2010-01-26 15:56:18 +0000
committerDan Gohman <gohman@apple.com>2010-01-26 15:56:18 +0000
commit8dcc58e6b44fbaab39a24b1f75e67f05275084dc (patch)
tree2796ce4607ca6b8c8c6c4fbd59ea45cf2524daf1 /lib/Support
parent058b3f5114359403ed811a8d36eef6747ea5a3ac (diff)
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Fix a typo that several people pointed out. Also, address the case of
wrapping that Duncan pointed out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94547 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
-rw-r--r--lib/Support/ConstantRange.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp
index e9ddffc06b..2746f7aaaa 100644
--- a/lib/Support/ConstantRange.cpp
+++ b/lib/Support/ConstantRange.cpp
@@ -540,8 +540,10 @@ ConstantRange::add(const ConstantRange &Other) const {
ConstantRange
ConstantRange::multiply(const ConstantRange &Other) const {
- // TODO: If either operand is a single element, round the result min anx
- // max value to the appropriate multiple of that element.
+ // TODO: If either operand is a single element and the multiply is known to
+ // be non-wrapping, round the result min and max value to the appropriate
+ // multiple of that element. If wrapping is possible, at least adjust the
+ // range according to the greatest power-of-two factor of the single element.
if (isEmptySet() || Other.isEmptySet())
return ConstantRange(getBitWidth(), /*isFullSet=*/false);