6e54fccede
The instruction-precise, or asynchronous, unwind tables usually take up much more space than the synchronous ones. If a user is concerned about the load size of the program and does not need the features provided with the asynchronous tables, the compiler should be able to generate the more compact variant. This patch changes the generation of CFI instructions for these cases so that they all come in one chunk in the prolog; it emits only one `.cfi_def_cfa*` instruction followed by `.cfi_offset` ones after all stack adjustments and register spills, and avoids generating CFI instructions in the epilog(s) as well as any other exceeding CFI instructions like `.cfi_remember_state` and `.cfi_restore_state`. Effectively, it reverses the effects of D111411 and D114545 on functions with the `uwtable(sync)` attribute. As a side effect, it also restores the behavior on functions that have neither `uwtable` nor `nounwind` attributes. Differential Revision: https://reviews.llvm.org/D153098
60 lines
3.5 KiB
LLVM
60 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
|
|
; RUN: llc < %s -O3 -mtriple=arm64-apple-ios -disable-post-ra | FileCheck %s
|
|
; <rdar://13463602>
|
|
|
|
%struct.Counter_Struct = type { i64, i64 }
|
|
%struct.Bicubic_Patch_Struct = type { ptr, i32, ptr, ptr, ptr, ptr, ptr, %struct.Bounding_Box_Struct, i64, i32, i32, i32, [4 x [4 x [3 x double]]], [3 x double], double, double, ptr }
|
|
%struct.Method_Struct = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
|
|
%struct.Object_Struct = type { ptr, i32, ptr, ptr, ptr, ptr, ptr, %struct.Bounding_Box_Struct, i64 }
|
|
%struct.Texture_Struct = type { i16, i16, i16, i32, float, float, float, ptr, ptr, ptr, %union.anon.9, ptr, ptr, ptr, ptr, ptr, i32 }
|
|
%struct.Warps_Struct = type { i16, ptr }
|
|
%struct.Pattern_Struct = type { i16, i16, i16, i32, float, float, float, ptr, ptr, ptr, %union.anon.6 }
|
|
%struct.Blend_Map_Struct = type { i16, i16, i16, i64, ptr }
|
|
%struct.Blend_Map_Entry = type { float, i8, %union.anon }
|
|
%union.anon = type { [2 x double], [8 x i8] }
|
|
%union.anon.6 = type { %struct.anon.7 }
|
|
%struct.anon.7 = type { float, [3 x double] }
|
|
%union.anon.9 = type { %struct.anon.10 }
|
|
%struct.anon.10 = type { float, [3 x double] }
|
|
%struct.Pigment_Struct = type { i16, i16, i16, i32, float, float, float, ptr, ptr, ptr, %union.anon.0, [5 x float] }
|
|
%union.anon.0 = type { %struct.anon }
|
|
%struct.anon = type { float, [3 x double] }
|
|
%struct.Tnormal_Struct = type { i16, i16, i16, i32, float, float, float, ptr, ptr, ptr, %union.anon.3, float }
|
|
%union.anon.3 = type { %struct.anon.4 }
|
|
%struct.anon.4 = type { float, [3 x double] }
|
|
%struct.Finish_Struct = type { float, float, float, float, float, float, float, float, float, float, float, float, float, float, float, [3 x float], [3 x float] }
|
|
%struct.Interior_Struct = type { i64, i32, float, float, float, float, float, ptr }
|
|
%struct.Media_Struct = type { i32, i32, i32, i32, i32, double, double, i32, i32, i32, i32, [5 x float], [5 x float], [5 x float], [5 x float], double, double, double, ptr, ptr, ptr }
|
|
%struct.Bounding_Box_Struct = type { [3 x float], [3 x float] }
|
|
%struct.Ray_Struct = type { [3 x double], [3 x double], i32, [100 x ptr] }
|
|
%struct.istack_struct = type { ptr, ptr, i32 }
|
|
%struct.istk_entry = type { double, [3 x double], [3 x double], ptr, i32, i32, double, double, ptr }
|
|
%struct.Transform_Struct = type { [4 x [4 x double]], [4 x [4 x double]] }
|
|
%struct.Bezier_Node_Struct = type { i32, [3 x double], double, i32, ptr }
|
|
|
|
define void @Precompute_Patch_Values(ptr %Shape) {
|
|
; CHECK-LABEL: Precompute_Patch_Values:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: sub sp, sp, #400
|
|
; CHECK-NEXT: stp x28, x27, [sp, #384] ; 16-byte Folded Spill
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 400
|
|
; CHECK-NEXT: .cfi_offset w27, -8
|
|
; CHECK-NEXT: .cfi_offset w28, -16
|
|
; CHECK-NEXT: ldr q0, [x0, #272]
|
|
; CHECK-NEXT: ldr x8, [x0, #288]
|
|
; CHECK-NEXT: stur q0, [sp, #216]
|
|
; CHECK-NEXT: str x8, [sp, #232]
|
|
; CHECK-NEXT: ldp x28, x27, [sp, #384] ; 16-byte Folded Reload
|
|
; CHECK-NEXT: add sp, sp, #400
|
|
; CHECK-NEXT: ret
|
|
entry:
|
|
%Control_Points = alloca [16 x [3 x double]], align 8
|
|
%arraydecay5.3.1 = getelementptr inbounds [16 x [3 x double]], ptr %Control_Points, i64 0, i64 9, i64 0
|
|
%arraydecay11.3.1 = getelementptr inbounds %struct.Bicubic_Patch_Struct, ptr %Shape, i64 0, i32 12, i64 1, i64 3, i64 0
|
|
call void @llvm.memcpy.p0.p0.i64(ptr %arraydecay5.3.1, ptr %arraydecay11.3.1, i64 24, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1)
|