mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 04:22:57 +02:00
230c3d0a1e
Allocframe and the following stores on the stack have a latency of 2 cycles when not in the same packet. This happens because R29 is needed early by the store instruction. Since one of such stores can be packetized along with allocframe and use old value of R29, we can assign it 0 cycle latency while leaving latency of other stores to the default value of 2 cycles. Patch by Jyotsna Verma. llvm-svn: 302034
82 lines
3.3 KiB
LLVM
82 lines
3.3 KiB
LLVM
; RUN: llc -march=hexagon -disable-post-ra < %s | FileCheck %s
|
|
|
|
; Make sure that if there's only one store to the stack, it gets packetized
|
|
; with allocframe as there's a latency of 2 cycles between allocframe and
|
|
; the following store if not in the same packet.
|
|
|
|
; CHECK: {
|
|
; CHECK: memd(r29
|
|
; CHECK-NOT: {
|
|
; CHECK: allocframe
|
|
; CHECK: }
|
|
; CHECK: = memw(gp+#G)
|
|
|
|
%struct.0 = type { %struct.0*, i32, %struct.2 }
|
|
%struct.1 = type { i32, i32, [31 x i8] }
|
|
%struct.2 = type { %struct.1 }
|
|
|
|
@G = common global %struct.0* null, align 4
|
|
|
|
define i32 @test(%struct.0* nocapture %a0) #0 {
|
|
b1:
|
|
%v2 = alloca %struct.0*, align 4
|
|
%v3 = bitcast %struct.0** %v2 to i8*
|
|
%v4 = getelementptr inbounds %struct.0, %struct.0* %a0, i32 0, i32 0
|
|
%v5 = load %struct.0*, %struct.0** %v4, align 4
|
|
store %struct.0* %v5, %struct.0** %v2, align 4
|
|
%v6 = bitcast %struct.0* %v5 to i8*
|
|
%v7 = load i8*, i8** bitcast (%struct.0** @G to i8**), align 4
|
|
tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %v6, i8* %v7, i32 48, i32 4, i1 false)
|
|
%v8 = getelementptr inbounds %struct.0, %struct.0* %a0, i32 0, i32 2, i32 0, i32 1
|
|
store i32 5, i32* %v8, align 4
|
|
%v9 = getelementptr inbounds %struct.0, %struct.0* %v5, i32 0, i32 2, i32 0, i32 1
|
|
store i32 5, i32* %v9, align 4
|
|
%v10 = bitcast %struct.0* %a0 to i32*
|
|
%v11 = load i32, i32* %v10, align 4
|
|
%v12 = bitcast %struct.0* %v5 to i32*
|
|
store i32 %v11, i32* %v12, align 4
|
|
%v13 = call i32 bitcast (i32 (...)* @f0 to i32 (%struct.0**)*)(%struct.0** nonnull %v2)
|
|
%v14 = load %struct.0*, %struct.0** %v2, align 4
|
|
%v15 = getelementptr inbounds %struct.0, %struct.0* %v14, i32 0, i32 1
|
|
%v16 = load i32, i32* %v15, align 4
|
|
%v17 = icmp eq i32 %v16, 0
|
|
br i1 %v17, label %b18, label %b32
|
|
|
|
b18: ; preds = %b1
|
|
%v19 = bitcast %struct.0** %v2 to i32**
|
|
%v20 = getelementptr inbounds %struct.0, %struct.0* %v14, i32 0, i32 2, i32 0, i32 1
|
|
store i32 6, i32* %v20, align 4
|
|
%v21 = getelementptr inbounds %struct.0, %struct.0* %a0, i32 0, i32 2, i32 0, i32 0
|
|
%v22 = load i32, i32* %v21, align 4
|
|
%v23 = getelementptr inbounds %struct.0, %struct.0* %v14, i32 0, i32 2, i32 0, i32 0
|
|
%v24 = call i32 bitcast (i32 (...)* @f1 to i32 (i32, i32*)*)(i32 %v22, i32* %v23)
|
|
%v25 = load i32*, i32** bitcast (%struct.0** @G to i32**), align 4
|
|
%v26 = load i32, i32* %v25, align 4
|
|
%v27 = load i32*, i32** %v19, align 4
|
|
store i32 %v26, i32* %v27, align 4
|
|
%v28 = load %struct.0*, %struct.0** %v2, align 4
|
|
%v29 = getelementptr inbounds %struct.0, %struct.0* %v28, i32 0, i32 2, i32 0, i32 1
|
|
%v30 = load i32, i32* %v29, align 4
|
|
%v31 = call i32 bitcast (i32 (...)* @f2 to i32 (i32, i32, i32*)*)(i32 %v30, i32 10, i32* %v29)
|
|
br label %b36
|
|
|
|
b32: ; preds = %b1
|
|
%v33 = bitcast %struct.0* %a0 to i8**
|
|
%v34 = load i8*, i8** %v33, align 4
|
|
%v35 = bitcast %struct.0* %a0 to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %v35, i8* %v34, i32 48, i32 4, i1 false)
|
|
br label %b36
|
|
|
|
b36: ; preds = %b32, %b18
|
|
ret i32 undef
|
|
}
|
|
|
|
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i1) #1
|
|
|
|
declare i32 @f0(...) #0
|
|
declare i32 @f1(...) #0
|
|
declare i32 @f2(...) #0
|
|
|
|
attributes #0 = { nounwind }
|
|
attributes #1 = { argmemonly nounwind }
|