220 lines
6.8 KiB
LLVM
220 lines
6.8 KiB
LLVM
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; Test memcpy using MVC.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8 *nocapture, i8 *nocapture, i32, i1) nounwind
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8 *nocapture, i8 *nocapture, i64, i1) nounwind
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declare void @foo(i8 *, i8 *)
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; Test a no-op move, i32 version.
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define void @f1(i8* %dest, i8* %src) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: %r2
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; CHECK-NOT: %r3
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 0, i1 false)
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ret void
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}
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; Test a no-op move, i64 version.
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define void @f2(i8* %dest, i8* %src) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: %r2
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; CHECK-NOT: %r3
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 0, i1 false)
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ret void
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}
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; Test a 1-byte move, i32 version.
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define void @f3(i8* %dest, i8* %src) {
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; CHECK-LABEL: f3:
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; CHECK: mvc 0(1,%r2), 0(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
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ret void
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}
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; Test a 1-byte move, i64 version.
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define void @f4(i8* %dest, i8* %src) {
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; CHECK-LABEL: f4:
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; CHECK: mvc 0(1,%r2), 0(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1, i1 false)
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ret void
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}
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; Test the upper range of a single MVC, i32 version.
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define void @f5(i8* %dest, i8* %src) {
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; CHECK-LABEL: f5:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 256, i1 false)
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ret void
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}
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; Test the upper range of a single MVC, i64 version.
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define void @f6(i8* %dest, i8* %src) {
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; CHECK-LABEL: f6:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 256, i1 false)
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ret void
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}
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; Test the first case that needs two MVCs.
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define void @f7(i8* %dest, i8* %src) {
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; CHECK-LABEL: f7:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: mvc 256(1,%r2), 256(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 257, i1 false)
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ret void
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}
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; Test the last-but-one case that needs two MVCs.
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define void @f8(i8* %dest, i8* %src) {
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; CHECK-LABEL: f8:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: mvc 256(255,%r2), 256(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 511, i1 false)
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ret void
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}
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; Test the last case that needs two MVCs.
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define void @f9(i8* %dest, i8* %src) {
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; CHECK-LABEL: f9:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: mvc 256(256,%r2), 256(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 512, i1 false)
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ret void
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}
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; Test an arbitrary value that uses straight-line code.
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define void @f10(i8* %dest, i8* %src) {
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; CHECK-LABEL: f10:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: mvc 256(256,%r2), 256(%r3)
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; CHECK: mvc 512(256,%r2), 512(%r3)
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; CHECK: mvc 768(256,%r2), 768(%r3)
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; CHECK: mvc 1024(255,%r2), 1024(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1279, i1 false)
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ret void
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}
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; ...and again in cases where not all parts are in range of MVC.
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define void @f11(i8* %srcbase, i8* %destbase) {
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; CHECK-LABEL: f11:
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; CHECK: mvc 4000(256,%r2), 3500(%r3)
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; CHECK: lay [[NEWDEST:%r[1-5]]], 4256(%r2)
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; CHECK: mvc 0(256,[[NEWDEST]]), 3756(%r3)
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; CHECK: mvc 256(256,[[NEWDEST]]), 4012(%r3)
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; CHECK: lay [[NEWSRC:%r[1-5]]], 4268(%r3)
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; CHECK: mvc 512(256,[[NEWDEST]]), 0([[NEWSRC]])
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; CHECK: mvc 768(255,[[NEWDEST]]), 256([[NEWSRC]])
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; CHECK: br %r14
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%dest = getelementptr i8, i8* %srcbase, i64 4000
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%src = getelementptr i8, i8* %destbase, i64 3500
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1279, i1 false)
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ret void
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}
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; ...and again with a destination frame base that goes out of range.
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define void @f12() {
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; CHECK-LABEL: f12:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: mvc 4076(256,%r15), 2100(%r15)
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; CHECK: lay [[NEWDEST:%r[1-5]]], 4332(%r15)
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; CHECK: mvc 0(256,[[NEWDEST]]), 2356(%r15)
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; CHECK: mvc 256(256,[[NEWDEST]]), 2612(%r15)
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; CHECK: mvc 512(256,[[NEWDEST]]), 2868(%r15)
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; CHECK: mvc 768(255,[[NEWDEST]]), 3124(%r15)
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%arr = alloca [6000 x i8]
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%dest = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 3900
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%src = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 1924
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call void @foo(i8* %dest, i8* %src)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1279, i1 false)
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call void @foo(i8* %dest, i8* %src)
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ret void
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}
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; ...and again with a source frame base that goes out of range.
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define void @f13() {
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; CHECK-LABEL: f13:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: mvc 200(256,%r15), 3826(%r15)
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; CHECK: mvc 456(256,%r15), 4082(%r15)
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; CHECK: lay [[NEWSRC:%r[1-5]]], 4338(%r15)
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; CHECK: mvc 712(256,%r15), 0([[NEWSRC]])
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; CHECK: mvc 968(256,%r15), 256([[NEWSRC]])
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; CHECK: mvc 1224(255,%r15), 512([[NEWSRC]])
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%arr = alloca [6000 x i8]
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%dest = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 24
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%src = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 3650
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call void @foo(i8* %dest, i8* %src)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1279, i1 false)
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call void @foo(i8* %dest, i8* %src)
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ret void
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}
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; Test the last case that is done using straight-line code.
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define void @f14(i8* %dest, i8* %src) {
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; CHECK-LABEL: f14:
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: mvc 256(256,%r2), 256(%r3)
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; CHECK: mvc 512(256,%r2), 512(%r3)
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; CHECK: mvc 768(256,%r2), 768(%r3)
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; CHECK: mvc 1024(256,%r2), 1024(%r3)
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; CHECK: mvc 1280(256,%r2), 1280(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1536, i1 false)
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ret void
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}
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; Test the first case that is done using a loop.
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define void @f15(i8* %dest, i8* %src) {
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; CHECK-LABEL: f15:
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; CHECK: lghi [[COUNT:%r[0-5]]], 6
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; CHECK: [[LABEL:\.L[^:]*]]:
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; CHECK: pfd 2, 768(%r2)
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; CHECK: mvc 0(256,%r2), 0(%r3)
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; CHECK: la %r2, 256(%r2)
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; CHECK: la %r3, 256(%r3)
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; CHECK: brctg [[COUNT]], [[LABEL]]
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; CHECK: mvc 0(1,%r2), 0(%r3)
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; CHECK: br %r14
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1537, i1 false)
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ret void
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}
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; ...and again with frame bases, where the base must be loaded into a
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; register before the loop.
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define void @f16() {
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; CHECK-LABEL: f16:
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; CHECK: brasl %r14, foo@PLT
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; CHECK-DAG: lghi [[COUNT:%r[0-5]]], 6
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; CHECK-DAG: la [[BASE:%r[0-5]]], 160(%r15)
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; CHECK: [[LABEL:\.L[^:]*]]:
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; CHECK: pfd 2, 2368([[BASE]])
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; CHECK: mvc 1600(256,[[BASE]]), 0([[BASE]])
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; CHECK: la [[BASE]], 256([[BASE]])
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; CHECK: brctg [[COUNT]], [[LABEL]]
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; CHECK: mvc 1600(1,[[BASE]]), 0([[BASE]])
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%arr = alloca [3200 x i8]
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%dest = getelementptr [3200 x i8], [3200 x i8] *%arr, i64 0, i64 1600
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%src = getelementptr [3200 x i8], [3200 x i8] *%arr, i64 0, i64 0
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call void @foo(i8* %dest, i8* %src)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest, i8* %src, i64 1537, i1 false)
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call void @foo(i8* %dest, i8* %src)
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ret void
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}
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