mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-19 09:57:42 +00:00
754aaee387
* Add masking instructions before loads and stores (in MC layer). * Add masking instructions after SP changes (in MC layer). * Forbid loads, stores and SP changes in delay slots (in MI layer). Differential Revision: http://llvm-reviews.chandlerc.com/D2904 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203484 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
1.7 KiB
LLVM
72 lines
1.7 KiB
LLVM
; RUN: llc -filetype=asm -mtriple=mipsel-none-linux -relocation-model=static \
|
|
; RUN: -O3 < %s | FileCheck %s
|
|
|
|
; RUN: llc -filetype=asm -mtriple=mipsel-none-nacl -relocation-model=static \
|
|
; RUN: -O3 < %s | FileCheck %s -check-prefix=CHECK-NACL
|
|
|
|
@x = global i32 0, align 4
|
|
declare void @f1(i32)
|
|
declare void @f2()
|
|
|
|
|
|
define void @test1() {
|
|
%1 = load i32* @x, align 4
|
|
call void @f1(i32 %1)
|
|
ret void
|
|
|
|
|
|
; CHECK-LABEL: test1
|
|
|
|
; We first make sure that for non-NaCl targets branch-delay slot contains
|
|
; dangerous instructions.
|
|
|
|
; Check that branch-delay slot is used to load argument from x before function
|
|
; call.
|
|
|
|
; CHECK: jal
|
|
; CHECK-NEXT: lw $4, %lo(x)(${{[0-9]+}})
|
|
|
|
; Check that branch-delay slot is used for adjusting sp before return.
|
|
|
|
; CHECK: jr $ra
|
|
; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}}
|
|
|
|
|
|
; For NaCl, check that branch-delay slot doesn't contain dangerous instructions.
|
|
|
|
; CHECK-NACL: jal
|
|
; CHECK-NACL-NEXT: nop
|
|
|
|
; CHECK-NACL: jr $ra
|
|
; CHECK-NACL-NEXT: nop
|
|
}
|
|
|
|
|
|
define void @test2() {
|
|
store i32 1, i32* @x, align 4
|
|
tail call void @f2()
|
|
ret void
|
|
|
|
|
|
; CHECK-LABEL: test2
|
|
|
|
; Check that branch-delay slot is used for storing to x before function call.
|
|
|
|
; CHECK: jal
|
|
; CHECK-NEXT: sw ${{[0-9]+}}, %lo(x)(${{[0-9]+}})
|
|
|
|
; Check that branch-delay slot is used for adjusting sp before return.
|
|
|
|
; CHECK: jr $ra
|
|
; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}}
|
|
|
|
|
|
; For NaCl, check that branch-delay slot doesn't contain dangerous instructions.
|
|
|
|
; CHECK-NACL: jal
|
|
; CHECK-NACL-NEXT: nop
|
|
|
|
; CHECK-NACL: jr $ra
|
|
; CHECK-NACL-NEXT: nop
|
|
}
|