diff options
| -rw-r--r-- | gcc/lra-constraints.c | 9 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr97971.c | 12 |
2 files changed, 19 insertions, 2 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index e739a46..6a5aa41 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -3106,8 +3106,13 @@ process_alt_operands (int only_alternative) && operand_reg[j] != NULL_RTX && HARD_REGISTER_P (operand_reg[j]) && REG_USERVAR_P (operand_reg[j])) - fatal_insn ("unable to generate reloads for " - "impossible constraints:", curr_insn); + { + /* For asm, let curr_insn_transform diagnose it. */ + if (INSN_CODE (curr_insn) < 0) + return false; + fatal_insn ("unable to generate reloads for " + "impossible constraints:", curr_insn); + } } if (last_conflict_j < 0) continue; diff --git a/gcc/testsuite/gcc.target/i386/pr97971.c b/gcc/testsuite/gcc.target/i386/pr97971.c new file mode 100644 index 0000000..d07a310 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr97971.c @@ -0,0 +1,12 @@ +/* PR middle-end/97971 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +int +foo (void) +{ + register _Complex long a asm ("rax"); + register int b asm ("rdx"); + asm ("# %0 %1" : "=&r" (a), "=r" (b)); /* { dg-error "inconsistent operand constraints in an 'asm'" } */ + return a; +} |