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[AliasAnalysis] Shrink AliasResults; NFC 

We're persisting AliasResults in some places in MemorySSA, so the size
of these now matters a little bit (well, 8 regular-sized bits, to be
precise).

Do the same for ModRefInfo for consistency.

llvm-svn: 327201
This commit is contained in:
George Burgess IV 2018-03-10 03:34:43 +00:00
parent 9804c67d21
commit 46c88d50bc
1 changed files with 2 additions and 2 deletions
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4
llvm/include/llvm/Analysis/AliasAnalysis.h
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@ -76,7 +76,7 @@ class Value;
///
/// See docs/AliasAnalysis.html for more information on the specific meanings
/// of these values.
enum AliasResult {
enum AliasResult : uint8_t {
/// The two locations do not alias at all.
///
/// This value is arranged to convert to false, while all other values
@ -97,7 +97,7 @@ enum AliasResult {
/// a modification and a reference. These are specifically structured such that
/// they form a three bit matrix and bit-tests for 'mod' or 'ref' or 'must'
/// work with any of the possible values.
enum class ModRefInfo {
enum class ModRefInfo : uint8_t {
/// Must is provided for completeness, but no routines will return only
/// Must today. See definition of Must below.
Must = 0,