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Emit Tag_ABI_FP_16bit_format build attribute.

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The __fp16 type is unconditionally exposed. Since -mfp16-format is not yet
supported, there is not a user switch to change this behaviour. This build
attribute should capture the default behaviour of the compiler, which is to
expose the IEEE 754 version of __fp16.

When -mfp16-format is emitted, that will be the way to control the value of
this build attribute.

Change-Id: I8a46641ff0fd2ef8ad0af5f482a6d1af2ac3f6b0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224115 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Charlie Turner
2014-12-12 11:59:18 +00:00
parent 536c84fb86
commit 2a3c63a58f
3 changed files with 31 additions and 0 deletions
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3
include/llvm/Support/ARMBuildAttributes.h
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@@ -200,6 +200,9 @@ enum {
// Tag_FP_HP_extension, (=36), uleb128
AllowHPFP = 1, // Allow use of Half Precision FP
// Tag_FP_16bit_format, (=38), uleb128
FP16FormatIEEE = 1,
// Tag_MPextension_use, (=42), uleb128
AllowMP = 1, // Allow use of MP extensions