IBM Z: Fix load-and-test peephole2 condition
For a peephole2 condition variable insn points to the first matched insn. In order to refer to the second matched insn use peep2_next_insn(1) instead. gcc/ChangeLog: * config/s390/s390.md (define_peephole2): Variable insn points to the first matched insn. Use peep2_next_insn(1) to refer to the second matched insn. gcc/testsuite/ChangeLog: * gcc.target/s390/20211119.c: New test.
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@ -1003,7 +1003,7 @@
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(match_operand:GPR 2 "memory_operand"))
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(match_operand:GPR 2 "memory_operand"))
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(set (reg CC_REGNUM)
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(set (reg CC_REGNUM)
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(compare (match_dup 0) (match_operand:GPR 1 "const0_operand")))]
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(compare (match_dup 0) (match_operand:GPR 1 "const0_operand")))]
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"s390_match_ccmode(insn, CCSmode) && TARGET_EXTIMM
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"s390_match_ccmode (peep2_next_insn (1), CCSmode) && TARGET_EXTIMM
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&& GENERAL_REG_P (operands[0])
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&& GENERAL_REG_P (operands[0])
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&& satisfies_constraint_T (operands[2])
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&& satisfies_constraint_T (operands[2])
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&& !contains_constant_pool_address_p (operands[2])"
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&& !contains_constant_pool_address_p (operands[2])"
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@ -0,0 +1,12 @@
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/* { dg-do run { target { s390_useable_hw } } } */
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/* { dg-options "-Os -march=z10" } */
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signed char a;
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int b = -925974181, c;
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unsigned *d = &b;
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int *e = &c;
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int main() {
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*e = ((217 ^ a) > 585) < *d;
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if (c != 1)
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__builtin_abort();
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return 0;
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}
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