[llvm] [BPF] Report an error if comparison imm operand cannot fit in 32bit (PR #142989)

[via llvm-commits]

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@@ -0,0 +1,10 @@
+; RUN: not llc -mtriple=bpfel -filetype=obj < %s 2>&1 >/dev/null | FileCheck %s
+
+; CHECK: error: immediate out of range, shall fit in 32 bits
+
+define dso_local void @test() naked {
+  tail call void asm sideeffect
+    "call 7; r1 = r0; r1 <<= 32; call 7; r1 $|= r0; if r1 == 0x1deadbeef goto +1; r0 = 0; exit;",
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yonghong-song wrote:

Yes, as inline asm, we can do simpler things.

https://github.com/llvm/llvm-project/pull/142989