Provide a test for int<->float and long<->double bitcasts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32445 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/CBackend/2006-12-11-Float-Bitcast.ll b/test/CodeGen/CBackend/2006-12-11-Float-Bitcast.ll
new file mode 100644 (file)
index 0000000..9f8a712
--- /dev/null
+++ b/test/CodeGen/CBackend/2006-12-11-Float-Bitcast.ll
@@ -0,0 +1,48 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=c &&
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=c | grep '__BITCAST' | wc -l | grep 14
+
+int %test1(float %F) {
+   %X = bitcast float %F to int
+   ret int %X
+}
+
+float %test2(int %I) {
+  %X = bitcast int %I to float
+  ret float %X
+}
+
+long %test3(double %D) {
+  %X = bitcast double %D to long
+  ret long %X
+}
+
+double %test4(long %L) {
+  %X = bitcast long %L to double
+  ret double %X
+}
+
+double %test5(double %D) {
+  %X = bitcast double %D to double
+  %Y = add double %X, 2.0
+  %Z = bitcast double %Y to long
+  %res = bitcast long %Z to double
+  ret double %res
+}
+
+float %test6(float %F) {
+  %X = bitcast float %F to float
+  %Y = add float %X, 2.0
+  %Z = bitcast float %Y to int
+  %res = bitcast int %Z to float
+  ret float %res
+}
+
+int %main(int %argc, sbyte** %argv) {
+  %a = call int %test1(float 3.1415926)
+  %b = call float %test2(int %a)
+  %c = call long %test3(double 3.1415926)
+  %d = call double %test4(long %c)
+  %e = call double %test5(double 7.0)
+  %f = call float %test6(float 7.0)
+  ret int %a
+}