d0022a7250
Now we won't copy the byval parameter (bigger than 8 bytes) to caller's parameter save area. Instead, we will only copy the byval parameter when it can not be passed entirely in registers which means we have to use parameter save area according to the 64 bit SVR4 ABI. Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D111485
42 lines
1.2 KiB
LLVM
42 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-n32:64-S128-v256:256:256-v512:512:512"
|
|
target triple = "powerpc64le-unknown-linux-gnu"
|
|
|
|
%struct = type { [4 x i32], [20 x i8] }
|
|
|
|
declare dso_local i32 @foo1(%struct* byval(%struct) %var)
|
|
declare dso_local void @foo(%struct* %var)
|
|
|
|
; check that 36bytes byval parameter is passed all in registers.
|
|
|
|
define dso_local i32 @bar() {
|
|
; CHECK-LABEL: bar:
|
|
; CHECK: # %bb.0: # %entry
|
|
; CHECK-NEXT: mflr 0
|
|
; CHECK-NEXT: std 0, 16(1)
|
|
; CHECK-NEXT: stdu 1, -80(1)
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 80
|
|
; CHECK-NEXT: .cfi_offset lr, 16
|
|
; CHECK-NEXT: addi 3, 1, 40
|
|
; CHECK-NEXT: bl foo
|
|
; CHECK-NEXT: nop
|
|
; CHECK-NEXT: ld 7, 72(1)
|
|
; CHECK-NEXT: ld 6, 64(1)
|
|
; CHECK-NEXT: ld 5, 56(1)
|
|
; CHECK-NEXT: ld 4, 48(1)
|
|
; CHECK-NEXT: ld 3, 40(1)
|
|
; CHECK-NEXT: bl foo1
|
|
; CHECK-NEXT: nop
|
|
; CHECK-NEXT: addi 1, 1, 80
|
|
; CHECK-NEXT: ld 0, 16(1)
|
|
; CHECK-NEXT: mtlr 0
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%x = alloca %struct, align 4
|
|
call void @foo(%struct* %x)
|
|
%r = call i32 @foo1(%struct* byval(%struct) %x)
|
|
ret i32 %r
|
|
}
|