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[ARC] Fix millicode wrong blink restore. 

The blink is restored wrongly when using millicode and regular load
instructions.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_restore_callee_milli) Don't clobber off
	variable.

testsuite/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* gcc.target/arc/milli-1.c: New test.

From-SVN: r267129
This commit is contained in:
Claudiu Zissulescu 2018-12-14 11:42:44 +01:00 committed by Claudiu Zissulescu
parent d77aa5cd56
commit 544a4843e8
4 changed files with 33 additions and 3 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2018-12-14 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_restore_callee_milli) Don't clobber off
variable.
2018-12-14 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.h (reg_class): Add SIBCALL_REGS.

4
gcc/config/arc/arc.c
View File

@ -3597,9 +3597,7 @@ arc_restore_callee_milli (unsigned int gmask,
insn = frame_insn (insn);
/* Add DWARF info. */
for (regno = start_reg, off = 0;
regno <= end_reg;
regno++, off += UNITS_PER_WORD)
for (regno = start_reg; regno <= end_reg; regno++)
{
reg = gen_rtx_REG (SImode, regno);
add_reg_note (insn, REG_CFA_RESTORE, reg);

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2018-12-14 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/milli-1.c: New test.
2018-12-13 Michael Ploujnikov <michael.ploujnikov@oracle.com>
* gcc.dg/lto/pr88297_0.c: New test.

23
gcc/testsuite/gcc.target/arc/milli-1.c Normal file
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@ -0,0 +1,23 @@
/* { dg-do compile } */
/* { dg-options "-Os" } */
/* Test if we restore correctly blink when using millicode. */
extern void bar (void);
void foo (void)
{
__asm__ volatile ( "" : : : "r13","r14","r15","r16","r17","r18","r20","r21");
bar();
}
void foo2 (void)
{
bar();
__asm__ volatile ( "" : : : "r13","r14","r15","r16","r17","r18","r20","r21");
}
/* { dg-final { scan-assembler-not "st.*r13,\\\[sp" } } */
/* { dg-final { scan-assembler-not "st.*r14,\\\[sp" } } */
/* { dg-final { scan-assembler-not "st.*r15,\\\[sp" } } */
/* { dg-final { scan-assembler "ld.*blink,\\\[sp,32" } } */
/* { dg-final { scan-assembler "mov_s.*r12,32" } } */