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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -mtriple=aarch64-unknown-linux -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s -check-prefixes=CHECK
--- |
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32"
target triple = "aarch64-unknown-linux"
%struct.__va_list = type { ptr, ptr, ptr, i32, i32 }
define i32 @va_start(ptr %a, ...) {
entry:
%ap = alloca %struct.__va_list, align 8
call void @llvm.lifetime.start.p0(i64 32, ptr %ap)
call void @llvm.va_start.p0(ptr %ap)
%vr_offs_p = getelementptr inbounds i8, ptr %ap, i64 28
%vr_offs = load i32, ptr %vr_offs_p, align 4
ret i32 %vr_offs
}
...
---
name: va_start
alignment: 16
legalized: true
regBankSelected: true
tracksRegLiveness: true
fixedStack:
- { id: 0, size: 4, alignment: 16 }
stack:
- { id: 0, size: 56, alignment: 8 }
- { id: 1, size: 128, alignment: 16 }
- { id: 2, name: ap, size: 32, alignment: 8 }
body: |
bb.0.entry:
; CHECK-LABEL: name: va_start
; CHECK: LIFETIME_START %stack.2.ap
; CHECK-NEXT: [[ADDXri:%[0-9]+]]:gpr64sp = ADDXri %stack.2.ap, 0, 0
; CHECK-NEXT: [[ADDXri1:%[0-9]+]]:gpr64common = ADDXri %stack.0, 0, 0
; CHECK-NEXT: STRXui [[ADDXri1]], [[ADDXri]], 0 :: (store (s64) into %ir.ap)
; CHECK-NEXT: [[ADDXri2:%[0-9]+]]:gpr64common = ADDXri %stack.0, 0, 0
; CHECK-NEXT: STRXui [[ADDXri2]], [[ADDXri]], 1 :: (store (s64) into %ir.ap + 8)
; CHECK-NEXT: [[ADDXri3:%[0-9]+]]:gpr64common = ADDXri %stack.0, 0, 0
; CHECK-NEXT: STRXui [[ADDXri3]], [[ADDXri]], 2 :: (store (s64) into %ir.ap + 16)
; CHECK-NEXT: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 0
; CHECK-NEXT: STRWui [[MOVi32imm]], [[ADDXri]], 6 :: (store (s32) into %ir.ap + 24, align 8)
; CHECK-NEXT: [[MOVi32imm1:%[0-9]+]]:gpr32 = MOVi32imm 0
; CHECK-NEXT: STRWui [[MOVi32imm1]], [[ADDXri]], 7 :: (store (s32) into %ir.ap + 28, basealign 8)
; CHECK-NEXT: [[LDRWui:%[0-9]+]]:gpr32 = LDRWui %stack.2.ap, 7 :: (dereferenceable load (s32) from %ir.vr_offs_p)
; CHECK-NEXT: $w0 = COPY [[LDRWui]]
LIFETIME_START %stack.2.ap
%0:gpr(p0) = G_FRAME_INDEX %stack.2.ap
G_VASTART %0(p0) :: (store (s256) into %ir.ap, align 8)
%1:gpr(s64) = G_CONSTANT i64 28
%2:gpr(p0) = G_PTR_ADD %0, %1(s64)
%3:gpr(s32) = G_LOAD %2(p0) :: (dereferenceable load (s32) from %ir.vr_offs_p)
$w0 = COPY %3(s32)
...
|
