diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md index 17c90f436c6cb9bf60495148730936b5e8cf34f1..fa4a7aeda3572c2270b8c48911f3446167ebf060 100644 --- a/gcc/config/arm/neon.md +++ b/gcc/config/arm/neon.md @@ -553,11 +553,11 @@ Enabled with -funsafe-math-optimizations -freciprocal-math and disabled for -Os since it increases code size . */ -(define_expand "div<mode>3" +(define_expand "div<VCVTF:mode>3" [(set (match_operand:VCVTF 0 "s_register_operand") (div:VCVTF (match_operand:VCVTF 1 "s_register_operand") (match_operand:VCVTF 2 "s_register_operand")))] - "TARGET_NEON && !optimize_size + "ARM_HAVE_NEON_<MODE>_ARITH && !optimize_size && flag_reciprocal_math" { rtx rec = gen_reg_rtx (<MODE>mode); diff --git a/gcc/testsuite/gcc.target/arm/neon-recip-div-1.c b/gcc/testsuite/gcc.target/arm/neon-recip-div-1.c new file mode 100644 index 0000000000000000000000000000000000000000..e15c3ca5fe9d3baac019a9d0a311eaa52041bc4e --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/neon-recip-div-1.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target arm_neon_ok } */ +/* { dg-options "-O3 -freciprocal-math -fno-unsafe-math-optimizations -save-temps" } */ +/* { dg-add-options arm_neon } */ + +int *a; +int n; +void b() { + int c; + for (c = 0; c < 100000; c++) + a[c] = (float)c / n; +} +/* We should not ICE, or get a vectorized reciprocal instruction when unsafe + math optimizations are disabled. */ +/* { dg-final { scan-assembler-not "vrecpe\\.f32\\t\[qd\].*" } } */ +/* { dg-final { scan-assembler-not "vrecps\\.f32\\t\[qd\].*" } } */