Copy all attributes when creating new operation.

Instead of just copying the fast-math attribute, copy all of the
attributes of the call operation.

Also amend the test to check that attributes are still there in the
updated code.

Author: Leporacanthicus

flang/lib/Optimizer/Transforms/ConstantArgumentGlobalisation.cpp

@@ -134,7 +134,9 @@ class CallOpRewriter : public mlir::OpRewritePattern<fir::CallOp> {
           loc, newResultTypes,
           callOp.getCallee().has_value() ? callOp.getCallee().value()
                                          : mlir::SymbolRefAttr{},
-          newOperands, callOp.getFastmathAttr());
+          newOperands);
+      // Copy all the attributes from the old to new op.
+      newOp->setAttrs(callOp->getAttrs());
       rewriter.replaceOp(callOp, newOp);
 
       for (auto e : toErase)

flang/test/Transforms/constant-argument-globalisation.fir

@@ -30,6 +30,7 @@ module {
 // CHECK: [[CONST_R1:%.*]] = fir.address_of([[EXTR_1:@.*]]) : !fir.ref<f64>
 // CHECK: [[CONST_I:%.*]] = fir.address_of([[EXTR_2:@.*]]) : !fir.ref<i32>
 // CHECK: fir.call @sub2([[CONST_R0]], [[CONST_R1]], [[X]], [[Y]], [[CONST_I]])
+// CHECK-SAME: fastmath<contract>
 // CHECK: return
 
 // CHECK: fir.global internal [[EXTR_0]] constant : f64 {