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[arm] Refine ARMBuildAttrs.h.

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This commit cleans up some comments in ARMBuildAttrs.h.
Besides, this commit fixes an error related to AllowWMMXv1
and AllowWMMXv2 (although they are not used currently.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194327 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Logan Chien 2013-11-09 14:16:52 +00:00
parent ea9988447c
commit f008d3465e
1 changed files with 8 additions and 6 deletions
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14
lib/Target/ARM/ARMBuildAttrs.h
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@ -105,11 +105,15 @@ namespace ARMBuildAttrs {
// The following have a lot of common use cases
enum {
//ARMISAUse (=8), uleb128 and THUMBISAUse (=9), uleb128
Not_Allowed = 0,
Allowed = 1,
// FP_arch (=10), uleb128 (formerly Tag_VFP_arch = 10)
// Tag_ARM_ISA_use (=8), uleb128
// Tag_THUMB_ISA_use, (=9), uleb128
AllowThumb32 = 2, // 32-bit Thumb (implies 16-bit instructions)
// Tag_FP_arch (=10), uleb128 (formerly Tag_VFP_arch = 10)
AllowFPv2 = 2, // v2 FP ISA permitted (implies use of the v1 FP ISA)
AllowFPv3A = 3, // v3 FP ISA permitted (implies use of the v2 FP ISA)
AllowFPv3B = 4, // v3 FP ISA permitted, but only D0-D15, S0-S31
@ -119,10 +123,8 @@ namespace ARMBuildAttrs {
AllowFPARMv8B = 8, // Use of the ARM v8-A FP ISA was permitted, but only D0-D15, S0-S31
// Tag_WMMX_arch, (=11), uleb128
AllowThumb32 = 2, // 32-bit Thumb (implies 16-bit instructions)
// Tag_WMMX_arch, (=11), uleb128
AllowWMMXv1 = 2, // The user permitted this entity to use WMMX v2
AllowWMMXv1 = 1, // The user permitted this entity to use WMMX v1
AllowWMMXv2 = 2, // The user permitted this entity to use WMMX v2
// Tag_Advanced_SIMD_arch, (=12), uleb128
AllowNeon = 1, // SIMDv1 was permitted