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IPA ICF: handle IMAGPART_EXPR and REALPART_EXPR.

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* gcc.dg/ipa/pr64307.c: New test.
	* ipa-icf-gimple.c (func_checker::compare_operand): Add support for
	IMAGPART_EXPR and REALPART_EXPR and fix BIT_FIELD_REF comparison.

From-SVN: r219586
This commit is contained in:
Martin Liska 2015-01-14 11:35:13 +01:00 • committed by Martin Liska
parent f29e90f541
commit 217c08c571
4 changed files with 54 additions and 1 deletions
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5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2015-01-14 Martin Liska <mliska@suse.cz>
* ipa-icf-gimple.c (func_checker::compare_operand): Add support for
IMAGPART_EXPR and REALPART_EXPR and fix BIT_FIELD_REF comparison.
2015-01-14 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/64460

14
gcc/ipa-icf-gimple.c
View file

@ -448,6 +448,8 @@ func_checker::compare_operand (tree t1, tree t2)
return return_with_debug (ret);
}
case IMAGPART_EXPR:
case REALPART_EXPR:
case ADDR_EXPR:
{
x1 = TREE_OPERAND (t1, 0);
@ -458,7 +460,17 @@ func_checker::compare_operand (tree t1, tree t2)
}
case BIT_FIELD_REF:
{
ret = compare_decl (t1, t2);
x1 = TREE_OPERAND (t1, 0);
x2 = TREE_OPERAND (t2, 0);
y1 = TREE_OPERAND (t1, 1);
y2 = TREE_OPERAND (t2, 1);
z1 = TREE_OPERAND (t1, 2);
z2 = TREE_OPERAND (t2, 2);
ret = compare_operand (x1, x2)
&& compare_cst_or_decl (y1, y2)
&& compare_cst_or_decl (z1, z2);
return return_with_debug (ret);
}
case SSA_NAME:

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2015-01-14 Martin Liska <mliska@suse.cz>
* gcc.dg/ipa/pr64307.c: New test.
2015-01-14 Tejas Belagod <tejas.belagod@arm.com>
* gcc.target/aarch64/vect-movi.c: Check for vectorization for

32
gcc/testsuite/gcc.dg/ipa/pr64307.c Normal file
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@ -0,0 +1,32 @@
/* { dg-do compile } */
/* { dg-options "-O0 -fipa-icf -fdump-ipa-icf" } */
#include <complex.h>
typedef _Complex float COMPLEX_FLOAT;
__attribute__ ((noinline))
static float real_part(COMPLEX_FLOAT a)
{
return *(float*)(&a);
}
__attribute__ ((noinline))
static float real_part_2(COMPLEX_FLOAT a)
{
return ((float*)(&a))[0];
}
int main()
{
COMPLEX_FLOAT f = 1.0f + _Complex_I;
float r1 = real_part(f);
float r2 = real_part_2(f);
return r1 - r2;
}
/* { dg-final { scan-ipa-dump "Semantic equality hit:real_part_2->real_part" "icf" } } */
/* { dg-final { scan-ipa-dump "Equal symbols: 1" "icf" } } */
/* { dg-final { cleanup-ipa-dump "icf" } } */