GlobalISel: mark overflow bit of overflow ops legal.

It's expected this will map to NZCV register class and be properly selectable.

llvm-svn: 279761

diff --git a/llvm/lib/Target/AArch64/AArch64MachineLegalizer.cpp b/llvm/lib/Target/AArch64/AArch64MachineLegalizer.cpp
index 4e533dd..d8f72a9 100644 (file)
--- a/llvm/lib/Target/AArch64/AArch64MachineLegalizer.cpp
+++ b/llvm/lib/Target/AArch64/AArch64MachineLegalizer.cpp
@@ -47,10 +47,13 @@ AArch64MachineLegalizer::AArch64MachineLegalizer() {
     for (auto Ty : {s32, s64})
       setAction({BinOp, Ty}, Legal);
 
-  for (auto Op : { G_UADDE, G_USUBE, G_SADDO, G_SSUBO, G_SMULO, G_UMULO })
+  for (auto Op : { G_UADDE, G_USUBE, G_SADDO, G_SSUBO, G_SMULO, G_UMULO }) {
     for (auto Ty : { s32, s64 })
       setAction({Op, Ty}, Legal);
 
+    setAction({Op, 1, s1}, Legal);
+  }
+
   for (auto BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
     for (auto Ty : {s32, s64})
       setAction({BinOp, Ty}, Legal);