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i386.c (ix86_value_regno): Don't return FIRST_MMX_REG if !TARGET_MMX...

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* config/i386/i386.c (ix86_value_regno): Don't return FIRST_MMX_REG
	if !TARGET_MMX, and don't return FIRST_SSE_REG if !TARGET_SSE.

From-SVN: r116321
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Roger Sayle 2006-08-22 12:42:41 +00:00 • committed by Roger Sayle
parent 173c3aa1f4
commit 883259c6d3
2 changed files with 12 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2006-08-22 Roger Sayle <roger@eyesopen.com>
* config/i386/i386.c (ix86_value_regno): Don't return FIRST_MMX_REG
if !TARGET_MMX, and don't return FIRST_SSE_REG if !TARGET_SSE.
2006-08-21 Jason Merrill <jason@redhat.com>
PR c++/27115

12
gcc/config/i386/i386.c
View file

@ -3980,14 +3980,16 @@ ix86_value_regno (enum machine_mode mode, tree func, tree fntype)
gcc_assert (!TARGET_64BIT);
/* 8-byte vector modes in %mm0. See ix86_return_in_memory for where
we prevent this case when mmx is not available. */
if ((VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 8))
return FIRST_MMX_REG;
we normally prevent this case when mmx is not available. However
some ABIs may require the result to be returned like DImode. */
if (VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 8)
return TARGET_MMX ? FIRST_MMX_REG : 0;
/* 16-byte vector modes in %xmm0. See ix86_return_in_memory for where
we prevent this case when sse is not available. */
we prevent this case when sse is not available. However some ABIs
may require the result to be returned like integer TImode. */
if (mode == TImode || (VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 16))
return FIRST_SSE_REG;
return TARGET_SSE ? FIRST_SSE_REG : 0;
/* Decimal floating point values can go in %eax, unlike other float modes. */
if (DECIMAL_FLOAT_MODE_P (mode))