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Cortex-M3 and Cortex-M4 should not enable hwdiv-arm 

llvm-svn: 200233
This commit is contained in:
Artyom Skrobov 2014-01-27 18:44:25 +00:00
parent 1a2292614c
commit 1c66c3a7f2
2 changed files with 9 additions and 2 deletions
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5
clang/lib/Basic/Targets.cpp
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@ -3832,14 +3832,15 @@ public:
Features["hwdiv"] = true;
Features["hwdiv-arm"] = true;
Features["crc"] = true;
} else if (CPU == "cortex-r5" || CPU == "cortex-m3" ||
CPU == "cortex-m4" ||
} else if (CPU == "cortex-r5" ||
// Enable the hwdiv extension for all v8a AArch32 cores by
// default.
ArchName == "armv8a" || ArchName == "armv8" ||
ArchName == "thumbv8a" || ArchName == "thumbv8") {
Features["hwdiv"] = true;
Features["hwdiv-arm"] = true;
} else if (CPU == "cortex-m3" || CPU == "cortex-m4") {
Features["hwdiv"] = true;
}
}

6
clang/test/Driver/arm-cortex-cpus.c
View File

@ -158,3 +158,9 @@
// RUN: %clang -target arm -mcpu=cortex-a53 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
// RUN: %clang -target arm -mcpu=cortex-a57 -mthumb -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-CPUV8A-THUMB %s
// CHECK-CPUV8A-THUMB: "-cc1"{{.*}} "-triple" "thumbv8-{{.*}}
// ================== Check that Cortex-M cores don't enable hwdiv-arm (and don't emit Tag_DIV_use)
// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-m3 -S %s -o - | FileCheck -check-prefix=CHECK-HWDIV-ARM %s
// RUN: %clang -target arm-linux-gnueabi -mcpu=cortex-m4 -S %s -o - | FileCheck -check-prefix=CHECK-HWDIV-ARM %s
// CHECK-HWDIV-ARM-NOT: .eabi_attribute 44