getSExtValue() doesn't work for ConstantInts with bitwidth > 64 bits. Use all
APInt calls instead.
This fixes PR3144.
llvm-svn: 60288
diff --git a/llvm/test/Transforms/InstCombine/sdiv-2.ll b/llvm/test/Transforms/InstCombine/sdiv-2.ll
new file mode 100644
index 0000000..db0c7fb
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/sdiv-2.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | opt -instcombine -disable-output
+; PR3144
+
+define fastcc i32 @func(i32 %length) nounwind {
+entry:
+ %0 = icmp ne i32 %length, -1 ; <i1> [#uses=1]
+ %iftmp.13.0 = select i1 %0, i128 0, i128 200000000 ; <i128> [#uses=2]
+ %1 = sdiv i128 %iftmp.13.0, 10 ; <i128> [#uses=1]
+ br label %bb5
+
+bb5: ; preds = %bb8, %entry
+ %v.0 = phi i128 [ 0, %entry ], [ %6, %bb8 ] ; <i128> [#uses=2]
+ %2 = icmp sgt i128 %v.0, %1 ; <i1> [#uses=1]
+ br i1 %2, label %overflow, label %bb7
+
+bb7: ; preds = %bb5
+ %3 = mul i128 %v.0, 10 ; <i128> [#uses=2]
+ %4 = sub i128 %iftmp.13.0, 0 ; <i128> [#uses=1]
+ %5 = icmp slt i128 %4, %3 ; <i1> [#uses=1]
+ br i1 %5, label %overflow, label %bb8
+
+bb8: ; preds = %bb7
+ %6 = add i128 0, %3 ; <i128> [#uses=1]
+ br label %bb5
+
+overflow: ; preds = %bb7, %bb5
+ ret i32 1
+}