[GlobalISel][AArch64] Add support for @llvm.ceil
This adds a G_FCEIL generic instruction and uses it in AArch64. This adds
selection for floating point ceil where it has a supported, dedicated
instruction. Other cases aren't handled here.
It updates the relevant gisel tests and adds a select-ceil test. It also adds a
check to arm64-vcvt.ll which ensures that we don't fall back when we run into
one of the relevant cases.
llvm-svn: 349664
diff --git a/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
index 5d63f0c..f0700ed 100644
--- a/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
@@ -97,6 +97,10 @@
getActionDefinitionsBuilder({G_FREM, G_FPOW}).libcallFor({s32, s64});
+ // TODO: Handle s16.
+ getActionDefinitionsBuilder(G_FCEIL)
+ .legalFor({s32, s64, v2s32, v4s32, v2s64});
+
getActionDefinitionsBuilder(G_INSERT)
.unsupportedIf([=](const LegalityQuery &Query) {
return Query.Types[0].getSizeInBits() <= Query.Types[1].getSizeInBits();