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/X86/shift-coalesce.ll b/test/CodeGen/X86/shift-coalesce.ll
new file mode 100644
index 0000000..a071c11
--- /dev/null
+++ b/test/CodeGen/X86/shift-coalesce.ll
@@ -0,0 +1,13 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 -x86-asm-syntax=intel | \
+; RUN: grep {shld.*CL}
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 -x86-asm-syntax=intel | \
+; RUN: not grep {mov CL, BL}
+
+; PR687
+
+ulong %foo(ulong %x, long* %X) {
+ %tmp.1 = load long* %X ; <long> [#uses=1]
+ %tmp.3 = cast long %tmp.1 to ubyte ; <ubyte> [#uses=1]
+ %tmp.4 = shl ulong %x, ubyte %tmp.3 ; <ulong> [#uses=1]
+ ret ulong %tmp.4
+}