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llvm/llvm/test/Transforms/ExpandVariadics/expand-va-intrinsic-split-linkage.ll 

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: -p --function-signature
; RUN: opt -mtriple=wasm32-unknown-unknown -S --passes=expand-variadics --expand-variadics-override=optimize < %s | FileCheck %s --check-prefixes=OPT
; RUN: opt -mtriple=wasm32-unknown-unknown -S --passes=expand-variadics --expand-variadics-override=lowering < %s | FileCheck %s --check-prefixes=ABI
; REQUIRES: webassembly-registered-target

; Split variadic functions into two functions:
; - one equivalent to the original, same symbol etc
; - one implementing the contents of the original but taking a valist
; IR here is applicable to any target that uses a ptr for valist
;
; Defines a function with each linkage (in the order of the llvm documentation).
; If split applies it does the same transform to each.
; Whether split applies depends on whether the ABI is being changed or not - e.g. a weak
; function is not normally useful to split as the contents cannot be called from elsewhere.
; If the ABI is being rewritten then the function is still converted. Call sites tested elsewhere.

; Update test checks doesn't emit checks for declares

declare void @sink_valist(ptr)
declare void @llvm.va_start(ptr)
declare void @llvm.va_end(ptr)

declare void @decl_simple(...)
define void @defn_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_simple(...) {
; OPT-NEXT:  entry:
; OPT-NEXT:    %va_start = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr %va_start)
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT:    %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT:    call void @defn_simple.valist(ptr %0)
; OPT-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr %va_start)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for private
define private void @defn_private_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_private_simple(...) {
; OPT-NEXT:  entry:
; OPT-NEXT:    %va_start = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr %va_start)
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT:    %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT:    call void @defn_private_simple.valist(ptr %0)
; OPT-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr %va_start)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_private_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for internal
define internal void @defn_internal_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_internal_simple(...) {
; OPT-NEXT:  entry:
; OPT-NEXT:    %va_start = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr %va_start)
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT:    %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT:    call void @defn_internal_simple.valist(ptr %0)
; OPT-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr %va_start)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_internal_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for available_externally
define available_externally void @available_externally_simple(...) {
; OPT-LABEL: define {{[^@]+}}@available_externally_simple(...) {
; OPT-NEXT:    %va = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va)
; OPT-NEXT:    call void @sink_valist(ptr %va)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@available_externally_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for linkonce
define linkonce void @defn_linkonce_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_linkonce_simple(...) {
; OPT-NEXT:    %va = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va)
; OPT-NEXT:    call void @sink_valist(ptr %va)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_linkonce_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for weak
define weak void @defn_weak_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_weak_simple(...) {
; OPT-NEXT:    %va = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va)
; OPT-NEXT:    call void @sink_valist(ptr %va)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_weak_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; common is not applicable to functions
; appending is not applicable to functions

declare extern_weak void @decl_extern_weak_simple(...)
; no define for extern_weak

; no declare for linkonce_odr
define linkonce_odr void @defn_linkonce_odr_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_linkonce_odr_simple(...) {
; OPT-NEXT:    %va = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va)
; OPT-NEXT:    call void @sink_valist(ptr %va)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_linkonce_odr_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

; no declare for weak_odr
define weak_odr void @defn_weak_odr_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_weak_odr_simple(...) {
; OPT-NEXT:    %va = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va)
; OPT-NEXT:    call void @sink_valist(ptr %va)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_weak_odr_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}

declare external void @decl_external_simple(...)
define external void @defn_external_simple(...) {
; OPT-LABEL: define {{[^@]+}}@defn_external_simple(...) {
; OPT-NEXT:  entry:
; OPT-NEXT:    %va_start = alloca ptr, align 4
; OPT-NEXT:    call void @llvm.lifetime.start.p0(i64 4, ptr %va_start)
; OPT-NEXT:    call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT:    %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT:    call void @defn_external_simple.valist(ptr %0)
; OPT-NEXT:    call void @llvm.lifetime.end.p0(i64 4, ptr %va_start)
; OPT-NEXT:    ret void
;
; ABI-LABEL: define {{[^@]+}}@defn_external_simple(ptr %varargs) {
; ABI-NEXT:    %va = alloca ptr, align 4
; ABI-NEXT:    store ptr %varargs, ptr %va, align 4
; ABI-NEXT:    call void @sink_valist(ptr %va)
; ABI-NEXT:    ret void
;
  %va = alloca ptr, align 4
  call void @llvm.va_start(ptr %va)
  call void @sink_valist(ptr %va)
  call void @llvm.va_end(ptr %va)
  ret void
}