new testcase, each function should have one extension instr in it

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24711 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/extend.ll b/test/CodeGen/X86/extend.ll
new file mode 100644 (file)
index 0000000..1685d3b
--- /dev/null
+++ b/test/CodeGen/X86/extend.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | grep movzx | wc -l | grep 1
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | grep movsx | wc -l | grep 1
+
+%G1 = internal global ubyte 0          ; <ubyte*> [#uses=1]
+%G2 = internal global sbyte 0          ; <sbyte*> [#uses=1]
+
+implementation   ; Functions:
+
+short %test1() {  ;; one zext
+       %tmp.0 = load ubyte* %G1                ; <ubyte> [#uses=1]
+       %tmp.3 = cast ubyte %tmp.0 to short             ; <short> [#uses=1]
+       ret short %tmp.3
+}
+
+short %test2() {  ;; one sext
+       %tmp.0 = load sbyte* %G2                ; <sbyte> [#uses=1]
+       %tmp.3 = cast sbyte %tmp.0 to short             ; <short> [#uses=1]
+       ret short %tmp.3
+}