new testcase corresponding to PR621

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23157 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2005-08-30-RegAllocAliasProblem.ll b/test/CodeGen/X86/2005-08-30-RegAllocAliasProblem.ll
new file mode 100644 (file)
index 0000000..509c07b
--- /dev/null
+++ b/test/CodeGen/X86/2005-08-30-RegAllocAliasProblem.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | not grep 'test.*%AL' || \
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | not grep 'cmove.*%EAX'
+
+; This testcase was compiling to:
+;
+; _pypy_simple5:
+;        movl $13, %ecx
+;        movl $12, %eax
+;        movb 4(%esp), %al
+;        testb %al, %al      ;; clobber EAX!
+;        cmove %ecx, %eax
+;        ret
+
+int %pypy_simple5(bool %b_4787) {
+       %retval = select bool %b_4787, int 12, int 13           ; <int> [#uses=1]
+       ret int %retval
+}