[APInt] Remove all uses of zextOrSelf, sextOrSelf and truncOrSelf

Most clients only used these methods because they wanted to be able to
extend or truncate to the same bit width (which is a no-op). Now that
the standard zext, sext and trunc allow this, there is no reason to use
the OrSelf versions.

The OrSelf versions additionally have the strange behaviour of allowing
extending to a *smaller* width, or truncating to a *larger* width, which
are also treated as no-ops. A small amount of client code relied on this
(ConstantRange::castOp and MicrosoftCXXNameMangler::mangleNumber) and
needed rewriting.

Differential Revision: https://reviews.llvm.org/D125557

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 5ed55b0..aa9c77f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -466,9 +466,9 @@ void FunctionLoweringInfo::ComputePHILiveOutRegInfo(const PHINode *PN) {
   if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
     APInt Val;
     if (TLI->signExtendConstant(CI))
-      Val = CI->getValue().sextOrSelf(BitWidth);
+      Val = CI->getValue().sext(BitWidth);
     else
-      Val = CI->getValue().zextOrSelf(BitWidth);
+      Val = CI->getValue().zext(BitWidth);
     DestLOI.NumSignBits = Val.getNumSignBits();
     DestLOI.Known = KnownBits::makeConstant(Val);
   } else {
@@ -502,9 +502,9 @@ void FunctionLoweringInfo::ComputePHILiveOutRegInfo(const PHINode *PN) {
     if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
       APInt Val;
       if (TLI->signExtendConstant(CI))
-        Val = CI->getValue().sextOrSelf(BitWidth);
+        Val = CI->getValue().sext(BitWidth);
       else
-        Val = CI->getValue().zextOrSelf(BitWidth);
+        Val = CI->getValue().zext(BitWidth);
       DestLOI.NumSignBits = std::min(DestLOI.NumSignBits, Val.getNumSignBits());
       DestLOI.Known.Zero &= ~Val;
       DestLOI.Known.One &= Val;