File: fastcc-byval.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --no_x86_scrub_sp
; RUN: llc < %s -tailcallopt=false | FileCheck %s

; PR3122
; rdar://6400815

; byval requires a copy, even with fastcc.

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9.5"

%struct.MVT = type { i32 }

define fastcc i32 @bar() nounwind {
; CHECK-LABEL: bar:
; CHECK:       ## %bb.0:
; CHECK-NEXT:    subl $12, %esp
; CHECK-NEXT:    movl $1, 8(%esp)
; CHECK-NEXT:    movl $1, (%esp)
; CHECK-NEXT:    calll _foo
; CHECK-NEXT:    movl 8(%esp), %eax
; CHECK-NEXT:    addl $12, %esp
; CHECK-NEXT:    retl
	%V = alloca %struct.MVT
	store i32 1, ptr %V
	call fastcc void @foo(ptr byval(%struct.MVT) %V) nounwind
	%t = load i32, ptr %V
	ret i32 %t
}

declare fastcc void @foo(ptr byval(%struct.MVT))