Fix PR3763 by using proper APInt methods instead of uint64_t's.

llvm-svn: 66434

1 files changed, 25 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/2009-03-09-APIntCrash.ll b/llvm/test/CodeGen/X86/2009-03-09-APIntCrash.ll
new file mode 100644
index 00000000000..d7b5269eaeb
--- /dev/null
+++ b/llvm/test/CodeGen/X86/2009-03-09-APIntCrash.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s | llc -march=x86-64
+; PR3763
+	%struct.__block_descriptor = type { i64, i64 }
+
+define %struct.__block_descriptor @evUTCTime() nounwind {
+entry:
+	br i1 false, label %if.then, label %return
+
+if.then:		; preds = %entry
+	%srcval18 = load i128* null, align 8		; <i128> [#uses=1]
+	%tmp15 = lshr i128 %srcval18, 64		; <i128> [#uses=1]
+	%tmp9 = mul i128 %tmp15, 18446744073709551616000		; <i128> [#uses=1]
+	br label %return
+
+return:		; preds = %if.then, %entry
+	%retval.0 = phi i128 [ %tmp9, %if.then ], [ undef, %entry ]		; <i128> [#uses=0]
+	ret %struct.__block_descriptor undef
+}
+
+define i128 @test(i128 %arg) nounwind {
+	%A = shl i128 1, 92
+	%B = sub i128 0, %A
+	%C = mul i128 %arg, %B
+	ret i128 %C  ;; should codegen to neg(shift)
+}