[PATCH] D59631: [AArch64] Support selecting TPIDR_EL[1-3] as the thread base
Philip Derrin via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Thu Mar 21 16:56:19 PDT 2019
philip.derrin updated this revision to Diff 191800.
philip.derrin edited the summary of this revision.
philip.derrin added a comment.
Merged -mtpidr= with existing AArch32 option -mtp=
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D59631/new/
https://reviews.llvm.org/D59631
Files:
clang/include/clang/Driver/Options.td
clang/lib/Driver/ToolChains/Arch/AArch64.cpp
clang/test/Driver/clang-translation.c
Index: clang/test/Driver/clang-translation.c
===================================================================
--- clang/test/Driver/clang-translation.c
+++ clang/test/Driver/clang-translation.c
@@ -120,6 +120,36 @@
// RUN: FileCheck -check-prefix=ARMv7_THREAD_POINTER_NON %s
// ARMv7_THREAD_POINTER_NON-NOT: "-target-feature" "+read-tp-hard"
+// RUN: %clang -target aarch64-linux -### -S %s -arch armv8a 2>&1 | \
+// RUN: FileCheck -check-prefix=ARMv8_THREAD_POINTER_NON %s
+// ARMv8_THREAD_POINTER_NON-NOT: "-target-feature" "+tpidr-el1"
+// ARMv8_THREAD_POINTER_NON-NOT: "-target-feature" "+tpidr-el2"
+// ARMv8_THREAD_POINTER_NON-NOT: "-target-feature" "+tpidr-el3"
+
+// RUN: %clang -target aarch64-linux -### -S %s -arch armv8a -mtp=el0 2>&1 | \
+// RUN: FileCheck -check-prefix=ARMv8_THREAD_POINTER_EL0 %s
+// ARMv8_THREAD_POINTER_EL0-NOT: "-target-feature" "+tpidr-el1"
+// ARMv8_THREAD_POINTER_EL0-NOT: "-target-feature" "+tpidr-el2"
+// ARMv8_THREAD_POINTER_EL0-NOT: "-target-feature" "+tpidr-el3"
+
+// RUN: %clang -target aarch64-linux -### -S %s -arch armv8a -mtp=el1 2>&1 | \
+// RUN: FileCheck -check-prefix=ARMv8_THREAD_POINTER_EL1 %s
+// ARMv8_THREAD_POINTER_EL1: "-target-feature" "+tpidr-el1"
+// ARMv8_THREAD_POINTER_EL1-NOT: "-target-feature" "+tpidr-el2"
+// ARMv8_THREAD_POINTER_EL1-NOT: "-target-feature" "+tpidr-el3"
+
+// RUN: %clang -target aarch64-linux -### -S %s -arch armv8a -mtp=el2 2>&1 | \
+// RUN: FileCheck -check-prefix=ARMv8_THREAD_POINTER_EL2 %s
+// ARMv8_THREAD_POINTER_EL2-NOT: "-target-feature" "+tpidr-el1"
+// ARMv8_THREAD_POINTER_EL2: "-target-feature" "+tpidr-el2"
+// ARMv8_THREAD_POINTER_EL2-NOT: "-target-feature" "+tpidr-el3"
+
+// RUN: %clang -target aarch64-linux -### -S %s -arch armv8a -mtp=el3 2>&1 | \
+// RUN: FileCheck -check-prefix=ARMv8_THREAD_POINTER_EL3 %s
+// ARMv8_THREAD_POINTER_EL3-NOT: "-target-feature" "+tpidr-el1"
+// ARMv8_THREAD_POINTER_EL3-NOT: "-target-feature" "+tpidr-el2"
+// ARMv8_THREAD_POINTER_EL3: "-target-feature" "+tpidr-el3"
+
// RUN: %clang -target powerpc64-unknown-linux-gnu \
// RUN: -### -S %s -mcpu=G5 2>&1 | FileCheck -check-prefix=PPCG5 %s
// PPCG5: clang
Index: clang/lib/Driver/ToolChains/Arch/AArch64.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Arch/AArch64.cpp
+++ clang/lib/Driver/ToolChains/Arch/AArch64.cpp
@@ -194,6 +194,18 @@
Features.push_back("-neon");
}
+ if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {
+ StringRef Mtp = A->getValue();
+ if (Mtp == "el3")
+ Features.push_back("+tpidr-el3");
+ else if (Mtp == "el2")
+ Features.push_back("+tpidr-el2");
+ else if (Mtp == "el1")
+ Features.push_back("+tpidr-el1");
+ else if (Mtp != "el0")
+ D.Diag(diag::err_drv_invalid_mtp) << A->getAsString(Args);
+ }
+
// En/disable crc
if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
if (A->getOption().matches(options::OPT_mcrc))
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -2016,8 +2016,8 @@
HelpText<"Disallow generation of data access to code sections (ARM only)">;
def mno_execute_only : Flag<["-"], "mno-execute-only">, Group<m_arm_Features_Group>,
HelpText<"Allow generation of data access to code sections (ARM only)">;
-def mtp_mode_EQ : Joined<["-"], "mtp=">, Group<m_arm_Features_Group>, Values<"soft, cp15">,
- HelpText<"Read thread pointer from coprocessor register (ARM only)">;
+def mtp_mode_EQ : Joined<["-"], "mtp=">, Group<m_arm_Features_Group>, Values<"soft,cp15,el0,el1,el2,el3">,
+ HelpText<"Thread pointer access method (AArch32/AArch64 only)">;
def mpure_code : Flag<["-"], "mpure-code">, Alias<mexecute_only>; // Alias for GCC compatibility
def mno_pure_code : Flag<["-"], "mno-pure-code">, Alias<mno_execute_only>;
def mtvos_version_min_EQ : Joined<["-"], "mtvos-version-min=">, Group<m_Group>;
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D59631.191800.patch
Type: text/x-patch
Size: 4043 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20190321/3c5833c9/attachment.bin>
More information about the cfe-commits
mailing list