srhines created this revision.
srhines added reviewers: cfe-commits, weimingz.
Herald added a subscriber: aemerson.
Using -no-integrated-as causes -mcpu=krait to be transformed into
-march=armv7-a today. This precludes the assembler from using
instructions like sdiv, which are present for krait. Cortex-a15 is the
closest subset of functionality for krait, so we should switch the
assembler to use that instead.
http://reviews.llvm.org/D17874
Files:
lib/Driver/Tools.cpp
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -8706,12 +8706,12 @@
Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
// FIXME: remove krait check when GNU tools support krait cpu
- // for now replace it with -march=armv7-a to avoid a lower
+ // for now replace it with -mcpu=cortex-a15 to avoid a lower
// march from being picked in the absence of a cpu flag.
Arg *A;
if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
StringRef(A->getValue()).lower() == "krait")
- CmdArgs.push_back("-march=armv7-a");
+ CmdArgs.push_back("-mcpu=cortex-a15");
else
Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -8706,12 +8706,12 @@
Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
// FIXME: remove krait check when GNU tools support krait cpu
- // for now replace it with -march=armv7-a to avoid a lower
+ // for now replace it with -mcpu=cortex-a15 to avoid a lower
// march from being picked in the absence of a cpu flag.
Arg *A;
if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
StringRef(A->getValue()).lower() == "krait")
- CmdArgs.push_back("-march=armv7-a");
+ CmdArgs.push_back("-mcpu=cortex-a15");
else
Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
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