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arm.c (arm_option_override): Set max_insns_skipped to MAX_INSN_PER_IT_BLOCK when optimize_size for THUMB2. 

ChangeLog:
2014-08-14  Zhenqiang Chen  <zhenqiang.chen@arm.com>

	* config/arm/arm.c (arm_option_override): Set max_insns_skipped
	to MAX_INSN_PER_IT_BLOCK when optimize_size for THUMB2.

testsuite/ChangeLog:
2014-08-14  Zhenqiang Chen  <zhenqiang.chen@arm.com>

	* gcc.target/arm/max-insns-skipped.c: New test.

From-SVN: r213939
This commit is contained in:
Zhenqiang Chen 2014-08-14 04:47:43 +00:00 committed by Zhenqiang Chen
parent 0b3a20e31d
commit 4d2df0f470
4 changed files with 34 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-08-14 Zhenqiang Chen <zhenqiang.chen@arm.com>
* config/arm/arm.c (arm_option_override): Set max_insns_skipped
to MAX_INSN_PER_IT_BLOCK when optimize_size for THUMB2.
2014-08-13 Chen Gang gang.chen.5i5j@gmail.com
* microblaze/microblaze.md: Remove redundant '@' to avoid compiling

4
gcc/config/arm/arm.c
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@ -2989,6 +2989,10 @@ arm_option_override (void)
/* If optimizing for size, bump the number of instructions that we
are prepared to conditionally execute (even on a StrongARM). */
max_insns_skipped = 6;
/* For THUMB2, we limit the conditional sequence to one IT block. */
if (TARGET_THUMB2)
max_insns_skipped = MAX_INSN_PER_IT_BLOCK;
}
else
max_insns_skipped = current_tune->max_insns_skipped;

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2014-08-14 Zhenqiang Chen <zhenqiang.chen@arm.com>
* gcc.target/arm/max-insns-skipped.c: New test.
2014-08-14 Bin Cheng <bin.cheng@arm.com>
* c-c++-common/addrtmp.c: Add bind_pic_locally option.

21
gcc/testsuite/gcc.target/arm/max-insns-skipped.c Normal file
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@ -0,0 +1,21 @@
/* { dg-do assemble { target arm_thumb2 } } */
/* { dg-options " -Os " } */
int t (int a, int b, int c, int d)
{
int r;
if (a > 0) {
r = a + b;
r += 0x456;
r *= 0x1234567;
}
else {
r = b - a;
r -= 0x123;
r *= 0x12387;
r += d;
}
return r;
}
/* { dg-final { object-size text <= 40 } } */