[AArch64] Fix a type conversion bug for anlyzing compare.
The bug can cause spec2006/483.xalancbmk failure.
Patched by David Xu.
llvm-svn: 215206
diff --git a/llvm/test/CodeGen/AArch64/analyzecmp.ll b/llvm/test/CodeGen/AArch64/analyzecmp.ll
new file mode 100644
index 0000000..8962505
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/analyzecmp.ll
@@ -0,0 +1,32 @@
+; RUN: llc -O3 -mcpu=cortex-a57 < %s | FileCheck %s
+
+; CHECK-LABLE: @test
+; CHECK: tst [[CMP:x[0-9]+]], #0x8000000000000000
+; CHECK: csel [[R0:x[0-9]+]], [[S0:x[0-9]+]], [[S1:x[0-9]+]], eq
+; CHECK: csel [[R1:x[0-9]+]], [[S2:x[0-9]+]], [[S3:x[0-9]+]], eq
+target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
+target triple = "arm64--linux-gnueabi"
+
+define void @test(i64 %a, i64* %ptr1, i64* %ptr2) #0 align 2 {
+entry:
+ %conv = and i64 %a, 4294967295
+ %add = add nsw i64 %conv, -1
+ %div = sdiv i64 %add, 64
+ %rem = srem i64 %add, 64
+ %cmp = icmp slt i64 %rem, 0
+ br i1 %cmp, label %if.then, label %exit
+
+if.then:
+ %add2 = add nsw i64 %rem, 64
+ %add3 = add i64 %div, -1
+ br label %exit
+
+exit:
+ %__n = phi i64 [ %add3, %if.then ], [ %div, %entry ]
+ %__n.0 = phi i64 [ %add2, %if.then ], [ %rem, %entry ]
+ store i64 %__n, i64* %ptr1
+ store i64 %__n.0, i64* %ptr2
+ ret void
+}
+
+