diff --git a/gcc/lra-remat.cc b/gcc/lra-remat.cc index bb13c616a74..2f3afffcf5b 100644 --- a/gcc/lra-remat.cc +++ b/gcc/lra-remat.cc @@ -459,7 +459,8 @@ create_cands (void) if (insn2 != NULL && dst_regno >= FIRST_PSEUDO_REGISTER && reg_renumber[dst_regno] < 0 - && BLOCK_FOR_INSN (insn2) == BLOCK_FOR_INSN (insn)) + && BLOCK_FOR_INSN (insn2) == BLOCK_FOR_INSN (insn) + && insn2 == prev_nonnote_insn (insn)) { create_cand (insn2, regno_potential_cand[src_regno].nop, dst_regno, insn); @@ -473,9 +474,10 @@ create_cands (void) gcc_assert (REG_P (*id->operand_loc[nop])); int regno = REGNO (*id->operand_loc[nop]); gcc_assert (regno >= FIRST_PSEUDO_REGISTER); - /* If we're setting an unrenumbered pseudo, make a candidate immediately. - If it's an output reload register, save it for later; the code above - looks for output reload insns later on. */ + /* If we're setting an unrenumbered pseudo, make a candidate + immediately. If it's a potential output reload register, save + it for later; the code above looks for output reload insns later + on. */ if (reg_renumber[regno] < 0) create_cand (insn, nop, regno); else if (regno >= lra_constraint_new_regno_start) diff --git a/gcc/testsuite/gcc.target/i386/pr115568.c b/gcc/testsuite/gcc.target/i386/pr115568.c new file mode 100644 index 00000000000..cedc7ac3843 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr115568.c @@ -0,0 +1,38 @@ +/* { dg-do run } */ +/* { dg-options "-O2 -fno-tree-sink -fno-tree-ter -fschedule-insns" } */ + +int a, c, d = 1, e, f = 1, h, i, j; +unsigned b = 1, g; +int main() { + for (; h < 2; h++) { + int k = ~(b || 0), l = ((~e - j) ^ a % b) % k, m = (b ^ -1) + e; + unsigned o = ~a % ~1; + if (f) { + l = d; + m = 10; + i = e; + d = -(~e + b); + g = o % m; + e = -1; + n: + a = a % ~i; + b = ~k; + if (!g) { + b = e + o % -1; + continue; + } + if (!l) + break; + } + int q = (~d + g) << ~e, p = (~d - q) & a >> b; + unsigned s = ~((g & e) + (p | (b ^ (d + k)))); + int r = (e & s) + p, u = d | ~a, + t = ((~(q + (~a + (s + e)))) & u) | (-g & (c << d ^ p)); + if (t) + if (!r) + goto n; + g = m; + e = i; + } + return 0; +}