[GlobalISel] NFC: Change LLT::vector to take ElementCount.

This also adds new interfaces for the fixed- and scalable case:
* LLT::fixed_vector
* LLT::scalable_vector

The strategy for migrating to the new interfaces was as follows:
* If the new LLT is a (modified) clone of another LLT, taking the
  same number of elements, then use LLT::vector(OtherTy.getElementCount())
  or if the number of elements is halfed/doubled, it uses .divideCoefficientBy(2)
  or operator*. That is because there is no reason to specifically restrict
  the types to 'fixed_vector'.
* If the algorithm works on the number of elements (as unsigned), then
  just use fixed_vector. This will need to be fixed up in the future when
  modifying the algorithm to also work for scalable vectors, and will need
  then need additional tests to confirm the behaviour works the same for
  scalable vectors.
* If the test used the '/*Scalable=*/true` flag of LLT::vector, then
  this is replaced by LLT::scalable_vector.

Reviewed By: aemerson

Differential Revision: https://reviews.llvm.org/D104451

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp b/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
index 676c7ee..24c1334 100644
--- a/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
+++ b/llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp
@@ -428,7 +428,7 @@ TEST_F(AArch64GISelMITest, MatchSpecificType) {
                        m_GAdd(m_SpecificType(s64), m_Reg())));
 
   // Try to match the destination type of a bitcast.
-  LLT v2s32 = LLT::vector(2, 32);
+  LLT v2s32 = LLT::fixed_vector(2, 32);
   auto MIBCast = B.buildCast(v2s32, Copies[0]);
   EXPECT_TRUE(
       mi_match(MIBCast.getReg(0), *MRI, m_GBitcast(m_Reg())));