[libcxx-commits] [libcxx] fba0b65 - [libc++] hash<long double>: adjust for x86-64 ILP32

[Harald van Dijk via libcxx-commits]

Author: Harald van Dijk
Date: 2020-11-29T13:52:28Z
New Revision: fba0b65f727134e8d05c785b04b7b574f852d49e

URL: https://github.com/llvm/llvm-project/commit/fba0b65f727134e8d05c785b04b7b574f852d49e
DIFF: https://github.com/llvm/llvm-project/commit/fba0b65f727134e8d05c785b04b7b574f852d49e.diff

LOG: [libc++] hash<long double>: adjust for x86-64 ILP32

x86-64 ILP32 mode (x32) uses 32-bit size_t, so share the code with ix86 to zero out padding bits, not with x86-64 LP64 mode.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D91349

Added: 
    

Modified: 
    libcxx/include/utility

Removed: 
    


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diff  --git a/libcxx/include/utility b/libcxx/include/utility
index 13489de22c95..5c9e2b6ddef2 100644
--- a/libcxx/include/utility
+++ b/libcxx/include/utility
@@ -1506,7 +1506,7 @@ struct _LIBCPP_TEMPLATE_VIS hash<long double>
         // -0.0 and 0.0 should return same hash
         if (__v == 0.0L)
             return 0;
-#if defined(__i386__)
+#if defined(__i386__) || (defined(__x86_64__) && defined(__ILP32__))
         // Zero out padding bits
         union
         {