Fix PR409:

Implement the suggested check to ensure that out-of-range float constants
don't get accepted by LLVM accidentally. Adjust the supporting test cases
as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24963 91177308-0d34-0410-b5e6-96231b3b80d8

test/Assembler/2004-01-22-FloatNormalization.ll

@@ -1,5 +0,0 @@
-; RUN: llvm-as < %s -o /dev/null -f
-
-; make sure that 'float' values have their value properly truncated.
-
-global float 0x1 

test/Assembler/2004-12-06-ConstantFloatRange.ll

@@ -1,5 +1,4 @@
 ; RUN: llvm-as %s -o /dev/null 2>&1 | grep "constant invalid for type"
-; XFAIL: *
 
 ;; This is a testcase for PR409