File: i128-retval.ll

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llvm-toolchain-16 1%3A16.0.6-15~deb12u1
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; RUN: llc < %s -O0 -march=nvptx64 -mcpu=sm_20 | FileCheck %s
; RUN: %if ptxas %{ llc < %s -O0 -march=nvptx64 -mcpu=sm_20 | %ptxas-verify %}

; CHECK-LABEL: .visible .func (.param .align 16 .b8 func_retval0[16]) callee(
define i128 @callee(i128) {
  ; CHECK: ld.param.v2.u64 {%[[REG0:rd[0-9]+]], %[[REG1:rd[0-9]+]]}, [callee_param_0];
  ; CHECK: st.param.v2.b64 [func_retval0+0], {%[[REG0]], %[[REG1]]}
  ret i128 %0
}

; CHECK-LABEL: .visible .func caller(
define void @caller(i128, ptr) {
start:
  ; CHECK-DAG: ld.param.v2.u64 {%[[REG0:rd[0-9]+]], %[[REG1:rd[0-9]+]]}, [caller_param_0];
  ; CHECK-DAG: ld.param.u64 %[[OUT:rd[0-9]+]],  [caller_param_1];

  ; CHECK: { // callseq 0, 0
	; CHECK: .param .align 16 .b8 retval0[16];
	; CHECK: call.uni (retval0),
  ; CHECK: ld.param.v2.b64 {%[[REG2:rd[0-9]+]], %[[REG3:rd[0-9]+]]}, [retval0+0];
	; CHECK: } // callseq 0
  %a = call i128 @callee(i128 %0)

	; CHECK-DAG: st.u64 [%[[OUT]]], %[[REG2]];
	; CHECK-DAG: st.u64 [%[[OUT]]+8], %[[REG3]];
  store i128 %a, ptr %1

  ret void
}