1 files changed, 36 insertions, 0 deletions
diff --git a/test/CodeGen/X86/atom-cmpb.ll b/test/CodeGen/X86/atom-cmpb.ll
new file mode 100644
index 0000000..034bf2f
--- /dev/null
+++ b/test/CodeGen/X86/atom-cmpb.ll
@@ -0,0 +1,36 @@
+; RUN: llc < %s -march=x86 -mcpu=atom | FileCheck %s
+; CHECK:        movl
+; CHECK:        movb
+; CHECK:        movb
+; CHECK:        cmpb
+; CHECK:        notb
+; CHECK:        notb
+
+; Test for checking of cancel conversion to cmp32 in Atom case 
+; in function 'X86TargetLowering::EmitCmp'
+ 
+define i8 @run_test(i8* %rd_p) {
+entry:
+  %incdec.ptr = getelementptr inbounds i8* %rd_p, i64 1
+  %ld1 = load i8* %rd_p, align 1
+  %incdec.ptr1 = getelementptr inbounds i8* %rd_p, i64 2
+  %ld2 = load i8* %incdec.ptr, align 1
+  %x4 = xor i8 %ld1, -1
+  %x5 = xor i8 %ld2, -1
+  %cmp34 = icmp ult i8 %ld2, %ld1
+  br i1 %cmp34, label %if.then3, label %if.else
+ 
+if.then3:                                        
+  %sub7 = sub i8 %x4, %x5
+  br label %if.end4
+ 
+if.else:                           
+  %sub8 = sub i8 %x5, %x4 
+  br label %if.end4 
+ 
+if.end4:          
+  %res = phi i8 [ %sub7, %if.then3 ], [ %sub8, %if.else ]
+  ret i8 %res
+
+}
+