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8322122: Enhance generation of addresses

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Backport-of: 1a4a46e102a2bc282fcbec571169867d715f4ade
This commit is contained in:
Martin Balao
2024-02-09 13:06:47 +00:00
committed by Vitaly Provodin
parent d1f5aaca0e
commit e5d86804a3
3 changed files with 14 additions and 8 deletions
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6
src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp
View File

@@ -168,8 +168,10 @@ LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
if (index->is_register()) {
// apply the shift and accumulate the displacement
if (shift > 0) {
LIR_Opr tmp = new_pointer_register();
__ shift_left(index, shift, tmp);
// Use long register to avoid overflow when shifting large index values left.
LIR_Opr tmp = new_register(T_LONG);
__ convert(Bytecodes::_i2l, index, tmp);
__ shift_left(tmp, shift, tmp);
index = tmp;
}
if (large_disp != 0) {

8
src/hotspot/cpu/ppc/c1_LIRGenerator_ppc.cpp
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2023 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -165,8 +165,10 @@ LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
if (index->is_register()) {
// Apply the shift and accumulate the displacement.
if (shift > 0) {
LIR_Opr tmp = new_pointer_register();
__ shift_left(index, shift, tmp);
// Use long register to avoid overflow when shifting large index values left.
LIR_Opr tmp = new_register(T_LONG);
__ convert(Bytecodes::_i2l, index, tmp);
__ shift_left(tmp, shift, tmp);
index = tmp;
}
if (large_disp != 0) {

8
src/hotspot/cpu/s390/c1_LIRGenerator_s390.cpp
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2017 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -157,8 +157,10 @@ LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
return new LIR_Address(base, index, type);
} else {
if (shift > 0) {
LIR_Opr tmp = new_pointer_register();
__ shift_left(index, shift, tmp);
// Use long register to avoid overflow when shifting large index values left.
LIR_Opr tmp = new_register(T_LONG);
__ convert(Bytecodes::_i2l, index, tmp);
__ shift_left(tmp, shift, tmp);
index = tmp;
}
return new LIR_Address(base, index, disp, type);