[llvm] AMDGPU: Add willreturn to sendmsg intrinsics (PR #125014)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/125014.diff


1 Files Affected:

- (modified) llvm/include/llvm/IR/IntrinsicsAMDGPU.td (+2-2) 


``````````diff
diff --git a/llvm/include/llvm/IR/IntrinsicsAMDGPU.td b/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
index f721d5267cd2a0..eb7bde69994913 100644
--- a/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
+++ b/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
@@ -237,7 +237,7 @@ def int_amdgcn_reloc_constant : DefaultAttrsIntrinsic<
 // the second one is copied to m0
 def int_amdgcn_s_sendmsg : ClangBuiltin<"__builtin_amdgcn_s_sendmsg">,
   Intrinsic <[], [llvm_i32_ty, llvm_i32_ty],
-  [ImmArg<ArgIndex<0>>, IntrNoMem, IntrHasSideEffects]>;
+  [ImmArg<ArgIndex<0>>, IntrNoMem, IntrHasSideEffects, IntrWillReturn]>;
 def int_amdgcn_s_sendmsghalt : ClangBuiltin<"__builtin_amdgcn_s_sendmsghalt">,
   Intrinsic <[], [llvm_i32_ty, llvm_i32_ty],
   [ImmArg<ArgIndex<0>>, IntrNoMem, IntrHasSideEffects]>;
@@ -246,7 +246,7 @@ def int_amdgcn_s_sendmsghalt : ClangBuiltin<"__builtin_amdgcn_s_sendmsghalt">,
 // gfx11 intrinsic
 // The first parameter is s_sendmsg immediate (i16). Return type is i32 or i64.
 def int_amdgcn_s_sendmsg_rtn : Intrinsic <[llvm_anyint_ty], [llvm_i32_ty],
-  [ImmArg<ArgIndex<0>>, IntrNoMem, IntrHasSideEffects]>;
+  [ImmArg<ArgIndex<0>>, IntrNoMem, IntrHasSideEffects, IntrWillReturn]>;
 
 // Vanilla workgroup sync-barrier
 def int_amdgcn_s_barrier : ClangBuiltin<"__builtin_amdgcn_s_barrier">,

``````````

</details>


https://github.com/llvm/llvm-project/pull/125014