It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 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
index 0000000..5c6babf
--- /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: 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
+}