93c8e0f2eb
If a function requires any streaming-mode change, the vector granule value must be stored to the stack and unwind info must also describe the save of VG to this location. This patch adds VG to the list of callee-saved registers and increases the callee-saved stack size if the function requires streaming-mode changes. A new type is added to RegPairInfo, which is also used to skip restoring the register used to spill the VG value in the epilogue. See https://github.com/ARM-software/abi-aa/blob/main/aadwarf64/aadwarf64.rst
85 lines
3.3 KiB
LLVM
85 lines
3.3 KiB
LLVM
; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -mattr=+sme2 -enable-machine-outliner -verify-machineinstrs < %s | FileCheck %s
|
|
; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -mattr=+sme2 -enable-machine-outliner -verify-machineinstrs < %s | FileCheck %s -check-prefix=OUTLINER
|
|
|
|
declare void @callee();
|
|
|
|
define void @streaming_mode_change1() #0 {
|
|
; CHECK-LABEL: streaming_mode_change1:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: stp d15, d14, [sp, #-80]! // 16-byte Folded Spill
|
|
; CHECK-NEXT: cntd x9
|
|
; CHECK-NEXT: stp d13, d12, [sp, #16] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d11, d10, [sp, #32] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d9, d8, [sp, #48] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp x30, x9, [sp, #64] // 16-byte Folded Spill
|
|
; CHECK-NEXT: smstop sm
|
|
; CHECK-NEXT: bl callee
|
|
; CHECK-NEXT: smstart sm
|
|
; CHECK-NEXT: ldp d9, d8, [sp, #48] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldr x30, [sp, #64] // 8-byte Folded Reload
|
|
; CHECK-NEXT: ldp d11, d10, [sp, #32] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d13, d12, [sp, #16] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d15, d14, [sp], #80 // 16-byte Folded Reload
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; OUTLINER-LABEL: streaming_mode_change1:
|
|
; OUTLINER-NOT: OUTLINED_FUNCTION_
|
|
;
|
|
call void @callee();
|
|
ret void;
|
|
}
|
|
|
|
define void @streaming_mode_change2() #0 {
|
|
; CHECK-LABEL: streaming_mode_change2:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: stp d15, d14, [sp, #-80]! // 16-byte Folded Spill
|
|
; CHECK-NEXT: cntd x9
|
|
; CHECK-NEXT: stp d13, d12, [sp, #16] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d11, d10, [sp, #32] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d9, d8, [sp, #48] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp x30, x9, [sp, #64] // 16-byte Folded Spill
|
|
; CHECK-NEXT: smstop sm
|
|
; CHECK-NEXT: bl callee
|
|
; CHECK-NEXT: smstart sm
|
|
; CHECK-NEXT: ldp d9, d8, [sp, #48] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldr x30, [sp, #64] // 8-byte Folded Reload
|
|
; CHECK-NEXT: ldp d11, d10, [sp, #32] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d13, d12, [sp, #16] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d15, d14, [sp], #80 // 16-byte Folded Reload
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; OUTLINER-LABEL: streaming_mode_change2:
|
|
; OUTLINER-NOT: OUTLINED_FUNCTION_
|
|
;
|
|
call void @callee();
|
|
ret void;
|
|
}
|
|
|
|
define void @streaming_mode_change3() #0 {
|
|
; CHECK-LABEL: streaming_mode_change3:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: stp d15, d14, [sp, #-80]! // 16-byte Folded Spill
|
|
; CHECK-NEXT: cntd x9
|
|
; CHECK-NEXT: stp d13, d12, [sp, #16] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d11, d10, [sp, #32] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp d9, d8, [sp, #48] // 16-byte Folded Spill
|
|
; CHECK-NEXT: stp x30, x9, [sp, #64] // 16-byte Folded Spill
|
|
; CHECK-NEXT: smstop sm
|
|
; CHECK-NEXT: bl callee
|
|
; CHECK-NEXT: smstart sm
|
|
; CHECK-NEXT: ldp d9, d8, [sp, #48] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldr x30, [sp, #64] // 8-byte Folded Reload
|
|
; CHECK-NEXT: ldp d11, d10, [sp, #32] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d13, d12, [sp, #16] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp d15, d14, [sp], #80 // 16-byte Folded Reload
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; OUTLINER-LABEL: streaming_mode_change3:
|
|
; OUTLINER-NOT: OUTLINED_FUNCTION_
|
|
;
|
|
call void @callee();
|
|
ret void;
|
|
}
|
|
|
|
attributes #0 = { "aarch64_pstate_sm_enabled" nounwind }
|