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

1 files changed, 28 insertions, 0 deletions

diff --git a/test/CodeGen/Generic/fwdtwice.ll b/test/CodeGen/Generic/fwdtwice.ll
new file mode 100644
index 0000000..ec085ec
--- /dev/null
+++ b/test/CodeGen/Generic/fwdtwice.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-upgrade %s | llvm-as | llc
+
+;;
+;; Test the sequence:
+;;	cast -> setle 0, %cast -> br %cond
+;; This sequence should cause the cast value to be forwarded twice,
+;; i.e., cast is forwarded to the setle and teh setle is forwarded
+;; to the branch.
+;; register argument of the "branch-on-register" instruction, i.e.,
+;; 
+;; This produces the bogus output instruction:
+;;	brlez   <NULL VALUE>, .L_SumArray_bb3.
+;; This came from %bb1 of sumarrray.ll generated from sumarray.c.
+
+
+int %SumArray(int %Num) {
+        %Num = alloca int
+        br label %Top
+Top:
+        store int %Num, int * %Num
+        %reg108 = load int * %Num
+        %cast1006 = cast int %reg108 to uint
+        %cond1001 = setle uint %cast1006, 0
+	br bool %cond1001, label %bb6, label %Top
+
+bb6:
+	ret int 42
+}