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Remove the term non-PHI and instead use SinglePredecessor.

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Swift SVN r21340
This commit is contained in:
Michael Gottesman
2014-08-21 04:13:27 +00:00
parent 73434aa4fa
commit b30b212d04
2 changed files with 14 additions and 12 deletions
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15
lib/SIL/SILValue.cpp
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@@ -120,7 +120,7 @@ static bool isFirstPayloadedCaseOfEnum(EnumDecl *E, EnumElementDecl *Elt) {
SILValue SILValue::stripRCIdentityPreservingOps() {
SILValue V = *this;
while (true) {
V = V.stripNonPHIRCIdentityPreservingArgs();
V = V.stripSinglePredecessorRCIdentityPreservingArgs();
// Strip off RC identity preserving casts.
if (isRCIdentityPreservingCast(V->getKind())) {
@@ -151,8 +151,9 @@ SILValue SILValue::stripRCIdentityPreservingOps() {
}
}
/// Return the underlying SILValue after stripping off non-phi SILArguments.
SILValue SILValue::stripNonPHIArgs() {
/// Return the underlying SILValue after stripping off identity SILArguments if
/// we belong to a BB with one predecessor.
SILValue SILValue::stripSinglePredecessorArgs() {
SILValue V = *this;
while (true) {
@@ -188,14 +189,14 @@ SILValue SILValue::stripNonPHIArgs() {
}
}
/// Return the underlying SILValue after stripping off non-phi SILArguments
/// that can not affect RC Identity.
SILValue SILValue::stripNonPHIRCIdentityPreservingArgs() {
/// Return the underlying SILValue after stripping off SILArguments that can not
/// affect RC identity if our BB has only one predecessor.
SILValue SILValue::stripSinglePredecessorRCIdentityPreservingArgs() {
SILValue V = *this;
while (true) {
// First strip off non PHI args that
V = V.stripNonPHIArgs();
V = V.stripSinglePredecessorArgs();
auto *A = dyn_cast<SILArgument>(V);
if (!A)