New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2138 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Assembler/2002-04-07-HexFloatConstants.llx b/test/Assembler/2002-04-07-HexFloatConstants.llx
new file mode 100644 (file)
index 0000000..422d3b4
--- /dev/null
+++ b/test/Assembler/2002-04-07-HexFloatConstants.llx
@@ -0,0 +1,18 @@
+; This testcase checks to make sure that the assembler can handle floating 
+; point constants in IEEE hex format. This also checks that the disassembler,
+; when presented with a FP constant that cannot be represented exactly in 
+; exponential form, outputs it correctly in hex format.  This is a distillation
+; of the bug that was causing the Olden Health benchmark to output incorrect
+; results!
+;
+; RUN: as < %s | opt -constprop | dis > Output/%s && \
+; RUN: as < %s | dis | as | opt -constprop | dis > Output/%s2 && \
+; RUN: diff Output/%s Output/%s2
+
+implementation
+
+double "test"()
+begin
+       %tmp = mul double 72.0e100, 0x427f4000
+       ret double %tmp
+end