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re PR rtl-optimization/40956 (Constants are never candidates for hoisting)

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PR rtl-optimization/40956
	PR target/42495
	PR middle-end/42574
	* gcc.target/arm/pr40956.c, gcc.target/arm/pr42495.c,
	* gcc.target/arm/pr42574.c: Add tests.

From-SVN: r162600
This commit is contained in:
Maxim Kuvyrkov 2010-07-27 21:06:31 +00:00 • committed by Maxim Kuvyrkov
parent ec3728adb8
commit 689d6c4a78
4 changed files with 77 additions and 0 deletions
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8
gcc/testsuite/ChangeLog
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@ -1,3 +1,11 @@
2010-07-27 Maxim Kuvyrkov <maxim@codesourcery.com>
PR rtl-optimization/40956
PR target/42495
PR middle-end/42574
* gcc.target/arm/pr40956.c, gcc.target/arm/pr42495.c,
* gcc.target/arm/pr42574.c: Add tests.
2010-07-27 Uros Bizjak <ubizjak@gmail.com>
* lib/gcc-dg.exp (cleanup-coverage-files): Remove options from

14
gcc/testsuite/gcc.target/arm/pr40956.c Normal file
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/* { dg-options "-mthumb -Os -fpic -march=armv5te" } */
/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-require-effective-target fpic } */
/* Make sure the constant "0" is loaded into register only once. */
/* { dg-final { scan-assembler-times "mov\[\\t \]*r., #0" 1 } } */
int foo(int p, int* q)
{
if (p!=9)
*q = 0;
else
*(q+1) = 0;
return 3;
}

31
gcc/testsuite/gcc.target/arm/pr42495.c Normal file
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/* { dg-options "-mthumb -Os -fpic -march=armv5te -fdump-rtl-hoist" } */
/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-require-effective-target fpic } */
/* Make sure all calculations of gObj's address get hoisted to one location. */
/* { dg-final { scan-rtl-dump "PRE/HOIST: end of bb .* copying expression" "hoist" } } */
struct st_a {
int data;
};
struct st_b {
struct st_a *p_a;
struct st_b *next;
};
extern struct st_b gObj;
extern void foo(int, struct st_b*);
int goo(struct st_b * obj) {
struct st_a *pa;
if (gObj.p_a->data != 0) {
foo(gObj.p_a->data, obj);
}
pa = obj->p_a;
if (pa == 0) {
return 0;
} else if (pa == gObj.p_a) {
return 0;
}
return pa->data;
}

24
gcc/testsuite/gcc.target/arm/pr42574.c Normal file
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/* { dg-options "-mthumb -Os -fpic -march=armv5te" } */
/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-require-effective-target fpic } */
/* Make sure the address of glob.c is calculated only once and using
a logical shift for the offset (200<<1). */
/* { dg-final { scan-assembler-times "lsl" 1 } } */
struct A {
char a[400];
float* c;
};
struct A glob;
void func();
void func1(float*);
int func2(float*, int*);
void func3(float*);
void test(int *p) {
func1(glob.c);
if (func2(glob.c, p)) {
func();
}
func3(glob.c);
}