[clang] [llvm] [AMDGPU][Clang] Allow amdgpu-waves-per-eu attribute to lower target occupancy range (PR #138284)

[Matt Arsenault via cfe-commits]

================
@@ -0,0 +1,40 @@
+; RUN: not llvm-as -disable-output %s 2>&1 | FileCheck %s
+
+target triple = "amdgcn-amd-amdhsa"
+
+define void @valid_amdgpu_waves_per_eu_range() "amdgpu-waves-per-eu"="2,4" {
+  ret void
+}
----------------
arsenm wrote:

valid cases are tested in test/Assembler or just implicitly from their other 
uses 

https://github.com/llvm/llvm-project/pull/138284
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