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[AArch64] Add command-line option predres

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Prediction control instructions are only
mandatory from v8.5a onwards but is optional
from Armv8.0-A. This patch adds a command
line option to enable it by it's own.

Differential Revision: https://reviews.llvm.org/D56007

llvm-svn: 350385
This commit is contained in:
Diogo N. Sampaio 2019-01-04 11:04:18 +00:00
parent 232ab01e6b
commit c6ed91e100
3 changed files with 5 additions and 1 deletions
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1
llvm/include/llvm/Support/AArch64TargetParser.def
View File

@ -74,6 +74,7 @@ AARCH64_ARCH_EXT_NAME("rng", AArch64::AEK_RAND, "+rand", "-rand")
AARCH64_ARCH_EXT_NAME("memtag", AArch64::AEK_MTE, "+mte", "-mte")
AARCH64_ARCH_EXT_NAME("ssbs", AArch64::AEK_SSBS, "+ssbs", "-ssbs")
AARCH64_ARCH_EXT_NAME("sb", AArch64::AEK_SB, "+sb", "-sb")
AARCH64_ARCH_EXT_NAME("predres", AArch64::AEK_PREDRES, "+predres", "-predres")
#undef AARCH64_ARCH_EXT_NAME
#ifndef AARCH64_CPU_NAME

1
llvm/include/llvm/Support/AArch64TargetParser.h
View File

@ -49,6 +49,7 @@ enum ArchExtKind : unsigned {
AEK_MTE = 1 << 19,
AEK_SSBS = 1 << 20,
AEK_SB = 1 << 21,
AEK_PREDRES = 1 << 22,
};
enum class ArchKind {

4
llvm/unittests/Support/TargetParserTest.cpp
View File

@ -990,7 +990,9 @@ TEST(TargetParserTest, AArch64ArchExtFeature) {
{"rng", "norng", "+rand", "-rand"},
{"memtag", "nomemtag", "+mte", "-mte"},
{"ssbs", "nossbs", "+ssbs", "-ssbs"},
{"sb", "nosb", "+sb", "-sb"}};
{"sb", "nosb", "+sb", "-sb"},
{"predres", "nopredres", "+predres", "-predres"}
};
for (unsigned i = 0; i < array_lengthof(ArchExt); i++) {
EXPECT_EQ(StringRef(ArchExt[i][2]),