mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
a649dfc42e
Summary: Avoid using XZR/WZR directly as operands to split stores of zero vectors. Doing so can lead to the XZR/WZR being used by an instruction that doesn't allow it (e.g. add). Fixes bug 34674. Reviewers: t.p.northover, efriedma, MatzeB Subscribers: aemerson, rengolin, javed.absar, mcrosier, eraman, llvm-commits, kristof.beyls Differential Revision: https://reviews.llvm.org/D38146 llvm-svn: 313916
244 lines
6.3 KiB
LLVM
244 lines
6.3 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -disable-fp-elim -tailcallopt | FileCheck %s -check-prefix CHECK-TAIL
|
|
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -disable-fp-elim | FileCheck %s
|
|
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -disable-fp-elim -tailcallopt -aarch64-redzone | FileCheck %s -check-prefix CHECK-TAIL-RZ
|
|
|
|
; Without tailcallopt fastcc still means the caller cleans up the
|
|
; stack, so try to make sure this is respected.
|
|
|
|
define fastcc void @func_stack0() {
|
|
; CHECK-LABEL: func_stack0:
|
|
; CHECK: sub sp, sp, #48
|
|
; CHECK: add x29, sp, #32
|
|
; CHECK: str w{{[0-9]+}}, [sp]
|
|
|
|
; CHECK-TAIL-LABEL: func_stack0:
|
|
; CHECK-TAIL: sub sp, sp, #48
|
|
; CHECK-TAIL-NEXT: stp x29, x30, [sp, #32]
|
|
; CHECK-TAIL-NEXT: add x29, sp, #32
|
|
; CHECK-TAIL: str w{{[0-9]+}}, [sp]
|
|
|
|
|
|
call fastcc void @func_stack8([8 x i32] undef, i32 42)
|
|
; CHECK: bl func_stack8
|
|
; CHECK-NOT: sub sp, sp,
|
|
; CHECK-NOT: [sp, #{{[-0-9]+}}]!
|
|
; CHECK-NOT: [sp], #{{[-0-9]+}}
|
|
|
|
; CHECK-TAIL: bl func_stack8
|
|
; CHECK-TAIL: stp xzr, xzr, [sp, #-16]!
|
|
|
|
|
|
call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
|
|
; CHECK: bl func_stack32
|
|
; CHECK-NOT: sub sp, sp,
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack32
|
|
; CHECK-TAIL: sub sp, sp, #32
|
|
|
|
|
|
call fastcc void @func_stack0()
|
|
; CHECK: bl func_stack0
|
|
; CHECK-NOT: sub sp, sp
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack0
|
|
; CHECK-TAIL-NOT: sub sp, sp
|
|
|
|
ret void
|
|
; CHECK: ldp x29, x30, [sp, #32]
|
|
; CHECK-NEXT: add sp, sp, #48
|
|
; CHECK-NEXT: ret
|
|
|
|
|
|
; CHECK-TAIL: ldp x29, x30, [sp, #32]
|
|
; CHECK-TAIL-NEXT: add sp, sp, #48
|
|
; CHECK-TAIL-NEXT: ret
|
|
}
|
|
|
|
define fastcc void @func_stack8([8 x i32], i32 %stacked) {
|
|
; CHECK-LABEL: func_stack8:
|
|
; CHECK: sub sp, sp, #48
|
|
; CHECK: stp x29, x30, [sp, #32]
|
|
; CHECK: add x29, sp, #32
|
|
; CHECK: str w{{[0-9]+}}, [sp]
|
|
|
|
|
|
; CHECK-TAIL-LABEL: func_stack8:
|
|
; CHECK-TAIL: sub sp, sp, #48
|
|
; CHECK-TAIL: stp x29, x30, [sp, #32]
|
|
; CHECK-TAIL: add x29, sp, #32
|
|
; CHECK-TAIL: str w{{[0-9]+}}, [sp]
|
|
|
|
|
|
call fastcc void @func_stack8([8 x i32] undef, i32 42)
|
|
; CHECK: bl func_stack8
|
|
; CHECK-NOT: sub sp, sp,
|
|
; CHECK-NOT: [sp, #{{[-0-9]+}}]!
|
|
; CHECK-NOT: [sp], #{{[-0-9]+}}
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack8
|
|
; CHECK-TAIL: stp xzr, xzr, [sp, #-16]!
|
|
|
|
|
|
call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
|
|
; CHECK: bl func_stack32
|
|
; CHECK-NOT: sub sp, sp,
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack32
|
|
; CHECK-TAIL: sub sp, sp, #32
|
|
|
|
|
|
call fastcc void @func_stack0()
|
|
; CHECK: bl func_stack0
|
|
; CHECK-NOT: sub sp, sp
|
|
|
|
; CHECK-TAIL: bl func_stack0
|
|
; CHECK-TAIL-NOT: sub sp, sp
|
|
|
|
ret void
|
|
; CHECK-NEXT: ldp x29, x30, [sp, #32]
|
|
; CHECK: add sp, sp, #48
|
|
; CHECK-NEXT: ret
|
|
|
|
|
|
; CHECK-TAIL: ldp x29, x30, [sp, #32]
|
|
; CHECK-TAIL-NEXT: add sp, sp, #64
|
|
; CHECK-TAIL-NEXT: ret
|
|
}
|
|
|
|
define fastcc void @func_stack32([8 x i32], i128 %stacked0, i128 %stacked1) {
|
|
; CHECK-LABEL: func_stack32:
|
|
; CHECK: add x29, sp, #32
|
|
|
|
; CHECK-TAIL-LABEL: func_stack32:
|
|
; CHECK-TAIL: add x29, sp, #32
|
|
|
|
|
|
call fastcc void @func_stack8([8 x i32] undef, i32 42)
|
|
; CHECK: bl func_stack8
|
|
; CHECK-NOT: sub sp, sp,
|
|
; CHECK-NOT: [sp, #{{[-0-9]+}}]!
|
|
; CHECK-NOT: [sp], #{{[-0-9]+}}
|
|
|
|
; CHECK-TAIL: bl func_stack8
|
|
; CHECK-TAIL: stp xzr, xzr, [sp, #-16]!
|
|
|
|
|
|
call fastcc void @func_stack32([8 x i32] undef, i128 0, i128 9)
|
|
; CHECK: bl func_stack32
|
|
; CHECK-NOT: sub sp, sp,
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack32
|
|
; CHECK-TAIL: sub sp, sp, #32
|
|
|
|
|
|
call fastcc void @func_stack0()
|
|
; CHECK: bl func_stack0
|
|
; CHECK-NOT: sub sp, sp
|
|
|
|
|
|
; CHECK-TAIL: bl func_stack0
|
|
; CHECK-TAIL-NOT: sub sp, sp
|
|
|
|
ret void
|
|
; CHECK: ldp x29, x30, [sp, #32]
|
|
; CHECK-NEXT: add sp, sp, #48
|
|
; CHECK-NEXT: ret
|
|
|
|
; CHECK-TAIL: ldp x29, x30, [sp, #32]
|
|
; CHECK-TAIL-NEXT: add sp, sp, #80
|
|
; CHECK-TAIL-NEXT: ret
|
|
}
|
|
|
|
; Check that arg stack pop is done after callee-save restore when no frame pointer is used.
|
|
define fastcc void @func_stack32_leaf([8 x i32], i128 %stacked0, i128 %stacked1) {
|
|
; CHECK-LABEL: func_stack32_leaf:
|
|
; CHECK: str x20, [sp, #-16]!
|
|
; CHECK: nop
|
|
; CHECK-NEXT: //NO_APP
|
|
; CHECK-NEXT: ldr x20, [sp], #16
|
|
; CHECK-NEXT: ret
|
|
|
|
; CHECK-TAIL-LABEL: func_stack32_leaf:
|
|
; CHECK-TAIL: str x20, [sp, #-16]!
|
|
; CHECK-TAIL: nop
|
|
; CHECK-TAIL-NEXT: //NO_APP
|
|
; CHECK-TAIL-NEXT: ldr x20, [sp], #16
|
|
; CHECK-TAIL-NEXT: add sp, sp, #32
|
|
; CHECK-TAIL-NEXT: ret
|
|
|
|
; CHECK-TAIL-RZ-LABEL: func_stack32_leaf:
|
|
; CHECK-TAIL-RZ: str x20, [sp, #-16]!
|
|
; CHECK-TAIL-RZ-NOT: sub sp, sp
|
|
; CHECK-TAIL-RZ: nop
|
|
; CHECK-TAIL-RZ-NEXT: //NO_APP
|
|
; CHECK-TAIL-RZ-NEXT: ldr x20, [sp], #16
|
|
; CHECK-TAIL-RZ-NEXT: add sp, sp, #32
|
|
; CHECK-TAIL-RZ-NEXT: ret
|
|
|
|
; Make sure there is a callee-save register to save/restore.
|
|
call void asm sideeffect "nop", "~{x20}"() nounwind
|
|
ret void
|
|
}
|
|
|
|
; Check that arg stack pop is done after callee-save restore when no frame pointer is used.
|
|
define fastcc void @func_stack32_leaf_local([8 x i32], i128 %stacked0, i128 %stacked1) {
|
|
; CHECK-LABEL: func_stack32_leaf_local:
|
|
; CHECK: sub sp, sp, #32
|
|
; CHECK-NEXT: str x20, [sp, #16]
|
|
; CHECK: nop
|
|
; CHECK-NEXT: //NO_APP
|
|
; CHECK-NEXT: ldr x20, [sp, #16]
|
|
; CHECK-NEXT: add sp, sp, #32
|
|
; CHECK-NEXT: ret
|
|
|
|
; CHECK-TAIL-LABEL: func_stack32_leaf_local:
|
|
; CHECK-TAIL: sub sp, sp, #32
|
|
; CHECK-TAIL-NEXT: str x20, [sp, #16]
|
|
; CHECK-TAIL: nop
|
|
; CHECK-TAIL-NEXT: //NO_APP
|
|
; CHECK-TAIL-NEXT: ldr x20, [sp, #16]
|
|
; CHECK-TAIL-NEXT: add sp, sp, #64
|
|
; CHECK-TAIL-NEXT: ret
|
|
|
|
; CHECK-TAIL-RZ-LABEL: func_stack32_leaf_local:
|
|
; CHECK-TAIL-RZ: str x20, [sp, #-16]!
|
|
; CHECK-TAIL-RZ-NOT: sub sp, sp
|
|
; CHECK-TAIL-RZ: nop
|
|
; CHECK-TAIL-RZ-NEXT: //NO_APP
|
|
; CHECK-TAIL-RZ-NEXT: ldr x20, [sp], #16
|
|
; CHECK-TAIL-RZ-NEXT: add sp, sp, #32
|
|
; CHECK-TAIL-RZ-NEXT: ret
|
|
|
|
%val0 = alloca [2 x i64], align 8
|
|
|
|
; Make sure there is a callee-save register to save/restore.
|
|
call void asm sideeffect "nop", "~{x20}"() nounwind
|
|
ret void
|
|
}
|
|
|
|
; Check that arg stack pop is done after callee-save restore when no frame pointer is used.
|
|
define fastcc void @func_stack32_leaf_local_nocs([8 x i32], i128 %stacked0, i128 %stacked1) {
|
|
; CHECK-LABEL: func_stack32_leaf_local_nocs:
|
|
; CHECK: sub sp, sp, #16
|
|
; CHECK: add sp, sp, #16
|
|
; CHECK-NEXT: ret
|
|
|
|
; CHECK-TAIL-LABEL: func_stack32_leaf_local_nocs:
|
|
; CHECK-TAIL: sub sp, sp, #16
|
|
; CHECK-TAIL: add sp, sp, #48
|
|
; CHECK-TAIL-NEXT: ret
|
|
|
|
; CHECK-TAIL-RZ-LABEL: func_stack32_leaf_local_nocs:
|
|
; CHECK-TAIL-RZ: add sp, sp, #32
|
|
; CHECK-TAIL-RZ-NEXT: ret
|
|
|
|
%val0 = alloca [2 x i64], align 8
|
|
|
|
ret void
|
|
}
|