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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
## Check that the delay-slot filler does not attempt to split BUNDLE instructions
# RUN: llc %s -start-before=mips-delay-slot-filler -stop-after=mips-delay-slot-filler \
# RUN: -verify-machineinstrs -o - | FileCheck %s
## Check that we can emit assembly for input with BUNDLE instructions:
# RUN: llc %s -start-before=mips-delay-slot-filler -verify-machineinstrs -o - | FileCheck %s -check-prefix ASM
# ASM: # %bb.0:
# ASM-NEXT: daddiu $sp, $sp, -16
# ASM-NEXT: sd $ra, 8($sp)
## BUNDLE should be emitted in order:
# ASM-NEXT: daddiu $sp, $sp, -16
# ASM-NEXT: daddiu $sp, $sp, 16
# ASM-NEXT: beqz $4, .LBB0_2
# ASM-NEXT: nop
--- |
target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
target triple = "mips64-unknown-freebsd"
declare ptr @func_a(i64 zeroext)
declare ptr @func_b(i64 zeroext)
; Function Attrs: nounwind
define ptr @test(i64 zeroext %nbytes) local_unnamed_addr #0 {
entry:
%cmp = icmp eq i64 %nbytes, 0
br i1 %cmp, label %if.else, label %if.then
if.then: ; preds = %entry
%call = tail call ptr @func_a(i64 zeroext %nbytes)
br label %return
if.else: ; preds = %entry
%call1 = tail call ptr @func_b(i64 zeroext 0)
br label %return
return: ; preds = %if.else, %if.then
%retval.0 = phi ptr [ %call, %if.then ], [ %call1, %if.else ]
ret ptr %retval.0
}
; Function Attrs: nounwind
declare void @llvm.stackprotector(ptr, ptr) #0
attributes #0 = { nounwind }
...
---
name: test
alignment: 8
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins:
- { reg: '$a0_64', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 16
offsetAdjustment: 0
maxAlignment: 8
adjustsStack: true
hasCalls: true
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$ra_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants: []
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: test
; CHECK: bb.0.entry:
; CHECK: successors: %bb.2(0x30000000), %bb.1(0x50000000)
; CHECK: $sp_64 = DADDiu $sp_64, -16
; CHECK: CFI_INSTRUCTION def_cfa_offset 16
; CHECK: SD killed $ra_64, $sp_64, 8 :: (store (s64) into %stack.0)
; CHECK: CFI_INSTRUCTION offset $ra_64, -8
; CHECK: BUNDLE {
; CHECK: $sp_64 = DADDiu $sp_64, -16
; CHECK: $sp_64 = DADDiu $sp_64, 16
; CHECK: }
; CHECK: BEQ64 renamable $a0_64, $zero_64, %bb.2, implicit-def $at {
; CHECK: $zero = SLL $zero, 0
; CHECK: }
; CHECK: bb.1.if.then:
; CHECK: successors: %bb.3(0x80000000)
; CHECK: JAL @func_a, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0_64 {
; CHECK: $zero = SLL $zero, 0
; CHECK: }
; CHECK: J %bb.3, implicit-def dead $at {
; CHECK: $zero = SLL $zero, 0
; CHECK: }
; CHECK: bb.2.if.else:
; CHECK: successors: %bb.3(0x80000000)
; CHECK: JAL @func_b, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0_64 {
; CHECK: $a0_64 = DADDiu $zero_64, 0
; CHECK: }
; CHECK: bb.3.return:
; CHECK: $ra_64 = LD $sp_64, 8 :: (load (s64) from %stack.0)
; CHECK: PseudoReturn64 undef $ra_64, implicit $v0_64 {
; CHECK: $sp_64 = DADDiu $sp_64, 16
; CHECK: }
bb.0.entry:
successors: %bb.2(0x30000000), %bb.1(0x50000000)
liveins: $a0_64, $ra_64
$sp_64 = DADDiu $sp_64, -16
CFI_INSTRUCTION def_cfa_offset 16
SD killed $ra_64, $sp_64, 8 :: (store (s64) into %stack.0)
CFI_INSTRUCTION offset $ra_64, -8
; This BUNDLE instruction must not be split by the delay slot filler:
BUNDLE {
$sp_64 = DADDiu $sp_64, -16
$sp_64 = DADDiu $sp_64, 16
}
BEQ64 renamable $a0_64, $zero_64, %bb.2, implicit-def $at
bb.1.if.then:
successors: %bb.3(0x80000000)
liveins: $a0_64
JAL @func_a, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0_64
J %bb.3, implicit-def dead $at
bb.2.if.else:
successors: %bb.3(0x80000000)
$a0_64 = DADDiu $zero_64, 0
JAL @func_b, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0_64
bb.3.return:
liveins: $v0_64
$ra_64 = LD $sp_64, 8 :: (load (s64) from %stack.0)
$sp_64 = DADDiu $sp_64, 16
PseudoReturn64 undef $ra_64, implicit $v0_64
...
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