Emit ARM build-attributes in the file scope (as header).
The ARM linker will check that .o files declare compatible
build attributes (e.g., all claim hard-float calling convention,
all claim VFP-vX ,etc.). Thus, in order to set up cross tests that
link LLC generated code against and Subzero generated code,
we need the build attributes to be compatible.
Pick ARMv7, hard-float calling convention, and neon, etc. which
we use for PNaCl LLVM.
Will probably have to reorganize to keep in sync once the ELF
writer also emits this.
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4076
R=kschimpf@google.com, stichnot@chromium.org
Review URL: https://codereview.chromium.org/1171563002.
diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index a2eac4b..069b49e 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -389,6 +389,26 @@
GlobalContext *Ctx;
};
+// TargetHeaderLowering is used to "lower" the header of an output file.
+// It writes out the target-specific header attributes. E.g., for ARM
+// this writes out the build attributes (float ABI, etc.).
+class TargetHeaderLowering {
+ TargetHeaderLowering() = delete;
+ TargetHeaderLowering(const TargetHeaderLowering &) = delete;
+ TargetHeaderLowering &operator=(const TargetHeaderLowering &) = delete;
+
+public:
+ static std::unique_ptr<TargetHeaderLowering>
+ createLowering(GlobalContext *Ctx);
+ virtual ~TargetHeaderLowering();
+
+ virtual void lower() {}
+
+protected:
+ explicit TargetHeaderLowering(GlobalContext *Ctx) : Ctx(Ctx) {}
+ GlobalContext *Ctx;
+};
+
} // end of namespace Ice
#endif // SUBZERO_SRC_ICETARGETLOWERING_H