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backport: re PR ipa/81112 (internal compiler error: tree check: expected integer_cst, have range_expr in get_len, at tree.h:5321) 

2017-06-29  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2017-06-19  Richard Biener  <rguenther@suse.de>

	PR ipa/81112
	* ipa-prop.c (find_constructor_constant_at_offset): Handle
	RANGE_EXPR conservatively.

	* g++.dg/torture/pr81112.C: New testcase.

From-SVN: r249772
This commit is contained in:
Richard Biener 2017-06-29 08:53:27 +00:00 committed by Richard Biener
parent 6974c4026e
commit 4d69799530
4 changed files with 91 additions and 1 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2017-06-29 Richard Biener <rguenther@suse.de>
Backport from mainline
2017-06-19 Richard Biener <rguenther@suse.de>
PR ipa/81112
* ipa-prop.c (find_constructor_constant_at_offset): Handle
RANGE_EXPR conservatively.
2017-06-28 Richard Biener <rguenther@suse.de>
Backport from mainline

7
gcc/ipa-prop.c
View File

@ -3030,7 +3030,10 @@ find_constructor_constant_at_offset (tree constructor, HOST_WIDE_INT req_offset)
if (index)
{
off = wi::to_offset (index);
if (TREE_CODE (index) == RANGE_EXPR)
off = wi::to_offset (TREE_OPERAND (index, 0));
else
off = wi::to_offset (index);
if (TYPE_DOMAIN (type) && TYPE_MIN_VALUE (TYPE_DOMAIN (type)))
{
tree low_bound = TYPE_MIN_VALUE (TYPE_DOMAIN (type));
@ -3039,6 +3042,8 @@ find_constructor_constant_at_offset (tree constructor, HOST_WIDE_INT req_offset)
TYPE_PRECISION (TREE_TYPE (index)));
}
off *= wi::to_offset (unit_size);
/* ??? Handle more than just the first index of a
RANGE_EXPR. */
}
else
off = wi::to_offset (unit_size) * ix;

8
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,11 @@
2017-06-29 Richard Biener <rguenther@suse.de>
Backport from mainline
2017-06-19 Richard Biener <rguenther@suse.de>
PR ipa/81112
* g++.dg/torture/pr81112.C: New testcase.
2017-06-28 Richard Biener <rguenther@suse.de>
Backport from mainline

68
gcc/testsuite/g++.dg/torture/pr81112.C Normal file
View File

@ -0,0 +1,68 @@
// { dg-do compile }
// { dg-additional-options "-Wno-psabi" }
class AssertionResult {
bool success_;
};
AssertionResult AssertionSuccess();
template <typename T1>
AssertionResult EXPECT_EQ(const T1& expected, const T1& actual) {
if (expected == actual) {
return AssertionSuccess();
}
return AssertionSuccess();
}
struct uuid
{
unsigned char data[16];
};
bool operator== (uuid const& lhs, uuid const& rhs);
typedef long long __m128i __attribute__ ((__vector_size__ (16), __may_alias__));
typedef int __v4si __attribute__ ((__vector_size__ (16)));
typedef char __v16qi __attribute__ ((__vector_size__ (16)));
typedef long long __m128i_u __attribute__ ((__vector_size__ (16), __may_alias__, __aligned__ (1)));
int foo (__v16qi);
extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_loadu_si128 (__m128i_u const *__P)
{
return *__P;
}
extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_cmpeq_epi32 (__m128i __A, __m128i __B)
{
return (__m128i) ((__v4si)__A == (__v4si)__B);
}
extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_movemask_epi8 (__m128i __A)
{
return foo ((__v16qi)__A);
}
__m128i load_unaligned_si128(const unsigned char* p)
{
return _mm_loadu_si128(reinterpret_cast< const __m128i* >(p));
}
inline bool operator== (uuid const& lhs, uuid const& rhs)
{
__m128i mm_left = load_unaligned_si128(lhs.data);
__m128i mm_right = load_unaligned_si128(rhs.data);
__m128i mm_cmp = _mm_cmpeq_epi32(mm_left, mm_right);
return _mm_movemask_epi8(mm_cmp) == 0xFFFF;
}
void crash_gcc7()
{
static const uuid u = uuid();
EXPECT_EQ(u, u);
}