File: cmpelim-xxu-subsi.c

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gcc-arm-none-eabi 15%3A12.2.rel1-1
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/* { dg-do compile } */
/* { dg-options "-fdump-rtl-cmpelim -dp" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */

typedef unsigned int __attribute__ ((mode (SI))) int_t;

int_t
xxu_subsi (int_t x, int_t y)
{
  int_t v;

  v = x - y;
  if (x == y)
    return v;
  else if (x >= y)
    return v + 2;
  else
    return v - 3;
}

/* Expect assembly like:

	movl 4(%ap),%r2			# 39	[c=16]  *movsi_2
	movl 8(%ap),%r1			# 40	[c=16]  *movsi_2
	subl3 %r1,%r2,%r0		# 41	[c=32]  *subsi3_cc/1
	jeql .L1			# 43	[c=26]  *branch_ccz
	jlssu .L3			# 38	[c=26]  *branch_cc
	addl2 $2,%r0			# 36	[c=32]  *addsi3
	ret				# 31	[c=0]  return
.L3:
	subl2 $3,%r0			# 35	[c=32]  *addsi3
.L1:

 */

/* { dg-final { scan-rtl-dump-times "deleting insn with uid" 2 "cmpelim" } } */
/* { dg-final { scan-assembler-not "\t(bit|cmpz?|tst). " } } */
/* { dg-final { scan-assembler "subsi\[^ \]*_cc(/\[0-9\]+)?\n" } } */
/* { dg-final { scan-assembler "branch_cc\n" } } */
/* { dg-final { scan-assembler "branch_ccz\n" } } */