Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/CodeGen/X86/fold-sext-trunc.ll

@@ -0,0 +1,20 @@
+; RUN: llc < %s -mtriple=x86_64-- | grep movslq | count 1
+; PR4050
+
+	%0 = type { i64 }		; type %0
+	%struct.S1 = type { i16, i32 }
+@g_10 = external global %struct.S1		; <%struct.S1*> [#uses=2]
+
+declare void @func_28(i64, i64)
+
+define void @int322(i32 %foo) nounwind {
+entry:
+	%val = load i64, i64* getelementptr (%0, %0* bitcast (%struct.S1* @g_10 to %0*), i32 0, i32 0)		; <i64> [#uses=1]
+	%0 = load i32, i32* getelementptr (%struct.S1, %struct.S1* @g_10, i32 0, i32 1), align 4		; <i32> [#uses=1]
+	%1 = sext i32 %0 to i64		; <i64> [#uses=1]
+	%tmp4.i = lshr i64 %val, 32		; <i64> [#uses=1]
+	%tmp5.i = trunc i64 %tmp4.i to i32		; <i32> [#uses=1]
+	%2 = sext i32 %tmp5.i to i64		; <i64> [#uses=1]
+	tail call void @func_28(i64 %2, i64 %1) nounwind
+	ret void
+}