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auto merge of #8695 : thestinger/rust/build, r=pcwalton 

We currently have no need for the frame pointers on any platform. They
may eventually be needed on platforms without an equivalent to the DWARF
call frame information to walk the stack in the garbage collector.

Closes #7477
This commit is contained in:
bors 2013-08-23 09:01:20 -07:00
parent f8c4f0ea9c 0ac02e7c4f
commit 2c0f9bd354
3 changed files with 2 additions and 9 deletions
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2
mk/llvm.mk
View File

@ -26,7 +26,7 @@ ifeq ($(CFG_LLVM_ROOT),)
$$(LLVM_CONFIG_$(1)): $$(LLVM_DEPS)
@$$(call E, make: llvm)
$$(Q)$$(MAKE) -C $$(CFG_LLVM_BUILD_DIR_$(1)) $$(CFG_LLVM_BUILD_ENV)
$$(Q)$$(MAKE) -C $$(CFG_LLVM_BUILD_DIR_$(1))
$$(Q)touch $$(LLVM_CONFIG_$(1))
endif

7
mk/platform.mk
View File

@ -26,10 +26,7 @@ endef
$(foreach t,$(CFG_TARGET_TRIPLES),$(eval $(call DEF_OSTYPE_VAR,$(t))))
$(foreach t,$(CFG_TARGET_TRIPLES),$(info cfg: os for $(t) is $(OSTYPE_$(t))))
# FIXME: no-omit-frame-pointer is just so that task_start_wrapper
# has a frame pointer and the stack walker can understand it. Turning off
# frame pointers everywhere is overkill
CFG_GCCISH_CFLAGS += -fno-omit-frame-pointer -DUSE_UTF8
CFG_GCCISH_CFLAGS += -DUSE_UTF8
# On Darwin, we need to run dsymutil so the debugging information ends
# up in the right place. On other platforms, it automatically gets
@ -153,7 +150,6 @@ CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-linux-gnu := -Wl,-no-whole-archive
CFG_DEF_SUFFIX_x86_64-unknown-linux-gnu := .linux.def
CFG_INSTALL_NAME_x86_64-unknown-linux-gnu =
CFG_LIBUV_LINK_FLAGS_x86_64-unknown-linux-gnu =
CFG_LLVM_BUILD_ENV_x86_64-unknown-linux-gnu="CXXFLAGS=-fno-omit-frame-pointer"
CFG_EXE_SUFFIX_x86_64-unknown-linux-gnu =
CFG_WINDOWSY_x86_64-unknown-linux-gnu :=
CFG_UNIXY_x86_64-unknown-linux-gnu := 1
@ -179,7 +175,6 @@ CFG_GCCISH_POST_LIB_FLAGS_i686-unknown-linux-gnu := -Wl,-no-whole-archive
CFG_DEF_SUFFIX_i686-unknown-linux-gnu := .linux.def
CFG_INSTALL_NAME_i686-unknown-linux-gnu =
CFG_LIBUV_LINK_FLAGS_i686-unknown-linux-gnu =
CFG_LLVM_BUILD_ENV_i686-unknown-linux-gnu="CXXFLAGS=-fno-omit-frame-pointer"
CFG_EXE_SUFFIX_i686-unknown-linux-gnu =
CFG_WINDOWSY_i686-unknown-linux-gnu :=
CFG_UNIXY_i686-unknown-linux-gnu := 1

2
src/rustllvm/RustWrapper.cpp
View File

@ -342,7 +342,6 @@ LLVMRustBuildJIT(void* mem,
std::string Err;
TargetOptions Options;
Options.JITEmitDebugInfo = true;
Options.NoFramePointerElim = true;
Options.EnableSegmentedStacks = EnableSegmentedStacks;
RustMCJITMemoryManager* MM = (RustMCJITMemoryManager*) mem;
assert(MM);
@ -393,7 +392,6 @@ LLVMRustWriteOutputFile(LLVMPassManagerRef PMR,
}
TargetOptions Options;
Options.NoFramePointerElim = true;
Options.EnableSegmentedStacks = EnableSegmentedStacks;
Options.FixedStackSegmentSize = 2 * 1024 * 1024; // XXX: This is too big.