[RISCV] Enable emission of alias instructions by default

This patch switches the default for -riscv-no-aliases to false
and updates all affected MC and CodeGen tests. As recommended in
D41071, MC tests use the canonical instructions and the CodeGen
tests use the aliases.

Additionally, for the f and d instructions with rounding mode,
the tests for the aliased versions are moved and tightened such
that they can actually detect if alias emission is enabled.
(see D40902 for context)

Differential Revision: https://reviews.llvm.org/D41225

Patch by Mario Werner.

llvm-svn: 320797

1 files changed, 1 insertions, 3 deletions

diff --git a/llvm/lib/Target/RISCV/InstPrinter/RISCVInstPrinter.cpp b/llvm/lib/Target/RISCV/InstPrinter/RISCVInstPrinter.cpp
index d21c48ec65a..ff56fc5d90f 100644
--- a/llvm/lib/Target/RISCV/InstPrinter/RISCVInstPrinter.cpp
+++ b/llvm/lib/Target/RISCV/InstPrinter/RISCVInstPrinter.cpp
@@ -29,12 +29,10 @@ using namespace llvm;
 #define PRINT_ALIAS_INSTR
 #include "RISCVGenAsmWriter.inc"
 
-// Alias instruction emission is disabled by default. A subsequent patch will
-// change this default and fix all affected tests.
 static cl::opt<bool>
 NoAliases("riscv-no-aliases",
             cl::desc("Disable the emission of assembler pseudo instructions"),
-            cl::init(true),
+            cl::init(false),
             cl::Hidden);
 
 void RISCVInstPrinter::printInst(const MCInst *MI, raw_ostream &O,