diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 12934233a48..03bb13612eb 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -27986,10 +27986,11 @@ arm_dbx_register_number (unsigned int regno) static rtx arm_dwarf_register_span (rtx rtl) { + enum machine_mode mode; unsigned regno; + rtx parts[8]; int nregs; int i; - rtx p; regno = REGNO (rtl); if (!IS_VFP_REGNUM (regno)) @@ -28002,15 +28003,33 @@ arm_dwarf_register_span (rtx rtl) corresponding D register. Until GDB supports this, we shall use the legacy encodings. We also use these encodings for D0-D15 for compatibility with older debuggers. */ - if (VFP_REGNO_OK_FOR_SINGLE (regno)) + mode = GET_MODE (rtl); + if (GET_MODE_SIZE (mode) < 8) return NULL_RTX; - nregs = GET_MODE_SIZE (GET_MODE (rtl)) / 8; - p = gen_rtx_PARALLEL (VOIDmode, rtvec_alloc (nregs)); - for (i = 0; i < nregs; i++) - XVECEXP (p, 0, i) = gen_rtx_REG (DImode, regno + i); + if (VFP_REGNO_OK_FOR_SINGLE (regno)) + { + nregs = GET_MODE_SIZE (mode) / 4; + for (i = 0; i < nregs; i += 2) + if (TARGET_BIG_END) + { + parts[i] = gen_rtx_REG (SImode, regno + i + 1); + parts[i + 1] = gen_rtx_REG (SImode, regno + i); + } + else + { + parts[i] = gen_rtx_REG (SImode, regno + i); + parts[i + 1] = gen_rtx_REG (SImode, regno + i + 1); + } + } + else + { + nregs = GET_MODE_SIZE (mode) / 8; + for (i = 0; i < nregs; i++) + parts[i] = gen_rtx_REG (DImode, regno + i); + } - return p; + return gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (nregs , parts)); } #if ARM_UNWIND_INFO |