GlobalISel: Fix moreElementsToNextPow2

This was completely broken. The condition was inverted, and changed
the element type for vectors of pointers.

Fixes bug 40592.

llvm-svn: 353069

2 files changed, 7 insertions, 8 deletions

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
index 1e9650f44d4..c2817a12352 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
@@ -115,8 +115,8 @@ LegalityPredicate LegalityPredicates::memSizeInBytesNotPow2(unsigned MMOIdx) {
 
 LegalityPredicate LegalityPredicates::numElementsNotPow2(unsigned TypeIdx) {
   return [=](const LegalityQuery &Query) {
-    const LLT &QueryTy = Query.Types[TypeIdx];
-    return QueryTy.isVector() && isPowerOf2_32(QueryTy.getNumElements());
+    const LLT QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isVector() && !isPowerOf2_32(QueryTy.getNumElements());
   };
 }
 
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizeMutations.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizeMutations.cpp
index 2d5422a0a9f..33228abcfb8 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizeMutations.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizeMutations.cpp
@@ -40,12 +40,11 @@ LegalizeMutation LegalizeMutations::widenScalarToNextPow2(unsigned TypeIdx,
 LegalizeMutation LegalizeMutations::moreElementsToNextPow2(unsigned TypeIdx,
                                                            unsigned Min) {
   return [=](const LegalityQuery &Query) {
-    const LLT &VecTy = Query.Types[TypeIdx];
-    unsigned NewNumElements = 1 << Log2_32_Ceil(VecTy.getNumElements());
-    if (NewNumElements < Min)
-      NewNumElements = Min;
-    return std::make_pair(
-        TypeIdx, LLT::vector(NewNumElements, VecTy.getScalarSizeInBits()));
+    const LLT VecTy = Query.Types[TypeIdx];
+    unsigned NewNumElements =
+        std::max(1u << Log2_32_Ceil(VecTy.getNumElements()), Min);
+    return std::make_pair(TypeIdx,
+                          LLT::vector(NewNumElements, VecTy.getElementType()));
   };
 }