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xtensa: fix PR target/90922 

Stack pointer adjustment code in prologue missed a case of no
callee-saved registers and a stack frame size bigger than 128 bytes.
Handle that case.

This fixes the following gcc tests with call0 ABI:
  gcc.c-torture/execute/stdarg-2.c
  gcc.dg/torture/pr55882.c
  gcc.dg/torture/pr57569.c

2019-06-18  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
	* config/xtensa/xtensa.c (xtensa_expand_prologue): Add stack
	pointer adjustment for the case of no callee-saved registers and
	stack frame bigger than 128 bytes.

From-SVN: r272455
This commit is contained in:
Max Filippov 2019-06-18 22:19:12 +00:00 committed by Max Filippov
parent 8701b671ee
commit 1fe39f194c
2 changed files with 9 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,10 @@
2019-06-18 Max Filippov <jcmvbkbc@gmail.com>
PR target/90922
* config/xtensa/xtensa.c (xtensa_expand_prologue): Add stack
pointer adjustment for the case of no callee-saved registers and
stack frame bigger than 128 bytes.
2019-06-18 Thomas Schwinge <thomas@codesourcery.com>
PR middle-end/90862

3
gcc/config/xtensa/xtensa.c
View File

@ -2865,7 +2865,8 @@ xtensa_expand_prologue (void)
gen_rtx_SET (mem, reg));
}
}
if (total_size > 1024)
if (total_size > 1024
|| (!callee_save_size && total_size > 128))
{
rtx tmp_reg = gen_rtx_REG (Pmode, A9_REG);
emit_move_insn (tmp_reg, GEN_INT (total_size -