Add testcase for pr14088.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165954 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/pr14088.ll b/test/CodeGen/X86/pr14088.ll
new file mode 100644 (file)
index 0000000..e55c630
--- /dev/null
+++ b/test/CodeGen/X86/pr14088.ll
@@ -0,0 +1,25 @@
+; RUN: llc -mtriple x86_64-linux %s -o - | FileCheck %s
+define i32 @f(i1 %foo, i16* %tm_year2, i8* %bar, i16 %zed, i32 %zed2) {
+entry:
+  br i1 %foo, label %return, label %if.end
+
+if.end:
+  %rem = srem i32 %zed2, 100
+  %conv3 = trunc i32 %rem to i16
+  store i16 %conv3, i16* %tm_year2
+  %sext = shl i32 %rem, 16
+  %conv5 = ashr exact i32 %sext, 16
+  %div = sdiv i32 %conv5, 10
+  %conv6 = trunc i32 %div to i8
+  store i8 %conv6, i8* %bar
+  br label %return
+
+return:
+  %retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]
+  ret i32 %retval.0
+}
+
+; We were miscompiling this and using %ax instead of %cx in the movw.
+; CHECK: movswl        %cx, %ecx
+; CHECK: movw  %cx, (%rsi)
+; CHECK: movslq        %ecx, %rcx