Index: cfe/trunk/lib/Driver/ToolChains/Clang.cpp =================================================================== --- cfe/trunk/lib/Driver/ToolChains/Clang.cpp +++ cfe/trunk/lib/Driver/ToolChains/Clang.cpp @@ -519,6 +519,7 @@ case llvm::Triple::xcore: case llvm::Triple::wasm32: case llvm::Triple::wasm64: + case llvm::Triple::msp430: // XCore never wants frame pointers, regardless of OS. // WebAssembly never wants frame pointers. return false; Index: cfe/trunk/test/CodeGen/msp430-fp-elim.c =================================================================== --- cfe/trunk/test/CodeGen/msp430-fp-elim.c +++ cfe/trunk/test/CodeGen/msp430-fp-elim.c @@ -0,0 +1,19 @@ +// REQUIRES: msp430-registered-target +// RUN: %clang_cc1 -mdisable-fp-elim -triple msp430 -S %s -o - | FileCheck %s --check-prefix=FP_ENFORCED +// RUN: %clang_cc1 -triple msp430 -S %s -o - | FileCheck %s --check-prefix=FP_DEFAULT + +// Check the frame pointer is not used on MSP430 by default, but can be forcibly turned on. + +// FP_ENFORCED: push r4 +// FP_ENFORCED: mov r4, r4 +// FP_ENFORCED: pop r4 +// FP_DEFAULT: .globl fp_elim_check +// FP_DEFAULT-NOT: push r4 +// FP_DEFAULT: mov r4, r4 +// FP_DEFAULT-NOT: pop r4 + +void fp_elim_check() +{ + asm volatile ("mov r4, r4"); +} +