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