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Disable PIC/PIE for MSP430 target by default. 

Relocatable code generation is meaningless on MSP430, as the platform is too small to use shared libraries.

Patch by Dmitry Mikushev!

Differential Revision: https://reviews.llvm.org/D56927

llvm-svn: 352181
This commit is contained in:
Anton Korobeynikov 2019-01-25 09:41:20 +00:00
parent 2a1f300bb5
commit 56bf7b56dc
2 changed files with 33 additions and 0 deletions
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4
clang/lib/Driver/ToolChains/MSP430.h
View File

@ -36,6 +36,10 @@ public:
llvm::opt::ArgStringList &CC1Args,
Action::OffloadKind) const override;
bool isPICDefault() const override { return false; }
bool isPIEDefault() const override { return false; }
bool isPICDefaultForced() const override { return true; }
protected:
Tool *buildLinker() const override;

29
clang/test/CodeGen/msp430-reloc.c Normal file
View File

@ -0,0 +1,29 @@
// RUN: %clang -target msp430 -fPIC -S %s -o - | FileCheck %s
// Check the compilation does not crash as it was crashing before with "-fPIC" enabled
void *alloca(unsigned int size);
// CHECK: .globl foo
short foo(char** data, char encoding)
{
char* encoding_addr = alloca(sizeof(char));
*encoding_addr = encoding;
char tmp3 = *encoding_addr;
short conv2 = tmp3;
short and = conv2 & 0xf;
switch (and)
{
case 0 :
case 4 :
case 10 :
return 1;
case 11 :
return 2;
}
return 0;
}