[PATCH] D50049: [ARM] Complete enumeration values for Tag_ABI_VFP_args
Peter Smith via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 31 03:55:08 PDT 2018
peter.smith created this revision.
peter.smith added reviewers: ruiu, grimar, kettenis, olista01.
Herald added a reviewer: javed.absar.
Herald added subscribers: chrib, kristof.beyls.
The LLD implementation of Tag_ABI_VFP_args needs to check the rarely seen values of 3 (toolchain specific) and 4 compatible with both Base and VFP. We currently only have enum values for 0 (Base AAPCS) and 1 (VFP AAPCS), this patch adds the missing enumeration values so that LLD (https://reviews.llvm.org/D49993) can refer to them without having to use the raw numbers.
>From Addenda to, and Errata in, the ABI for the Arm Architecture: http://infocenter.arm.com/help/topic/com.arm.doc.ihi0045e/IHI0045E_ABI_addenda.pdf
Tag_ABI_VFP_args, (=28), uleb128
0 The user intended FP parameter/result passing to conform to AAPCS, base variant
1 The user intended FP parameter/result passing to conform to AAPCS, VFP variant
2 The user intended FP parameter/result passing to conform to tool chain-specific
conventions
3 Code is compatible with both the base and VFP variants; the user did not permit
non-variadic functions to pass FP parameters/results
https://reviews.llvm.org/D50049
Files:
include/llvm/Support/ARMBuildAttributes.h
Index: include/llvm/Support/ARMBuildAttributes.h
===================================================================
--- include/llvm/Support/ARMBuildAttributes.h
+++ include/llvm/Support/ARMBuildAttributes.h
@@ -213,6 +213,8 @@
// Tag_ABI_VFP_args, (=28), uleb128
BaseAAPCS = 0,
HardFPAAPCS = 1,
+ ToolchainFPPCS = 2,
+ CompatibleFPAAPCS = 3,
// Tag_FP_HP_extension, (=36), uleb128
AllowHPFP = 1, // Allow use of Half Precision FP
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