rs6000: Fix shrink-wrap-separate for AIX
All out-of-line register save routines need LR, so we cannot wrap the LR component if there are out-of-line saves. This didn't show up for testing on Linux because none of the tests there use out-of-line FPR saves without also using out-of-line GPR saves, which we did handle. This patch fixes it, and also cleans up code a little. * config/rs6000/rs6000.c (rs6000_get_separate_components): Do not make LR a separately shrink-wrapped component unless savres_strategy contains all of {SAVE,REST}_INLINE_{GPRS,FPRS,VRS}. Do not wrap GPRs unless both {SAVE,REST}_INLINE_GPRS. Do not disallow all wrapping when not both {SAVE,REST}_INLINE_GPRS. From-SVN: r241203
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@ -1,3 +1,11 @@
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2016-10-15 Segher Boessenkool <segher@kernel.crashing.org>
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* config/rs6000/rs6000.c (rs6000_get_separate_components): Do not
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make LR a separately shrink-wrapped component unless savres_strategy
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contains all of {SAVE,REST}_INLINE_{GPRS,FPRS,VRS}. Do not wrap
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GPRs unless both {SAVE,REST}_INLINE_GPRS. Do not disallow all
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wrapping when not both {SAVE,REST}_INLINE_GPRS.
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2016-10-15 Eric Botcazou <ebotcazou@adacore.com>
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* optabs.c (expand_parity): Fix mode mismatch, add final conversion
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@ -27439,15 +27439,16 @@ rs6000_get_separate_components (void)
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{
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rs6000_stack_t *info = rs6000_stack_info ();
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if (!(info->savres_strategy & SAVE_INLINE_GPRS)
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|| !(info->savres_strategy & REST_INLINE_GPRS)
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|| WORLD_SAVE_P (info))
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if (WORLD_SAVE_P (info))
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return NULL;
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sbitmap components = sbitmap_alloc (32);
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bitmap_clear (components);
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/* The GPRs we need saved to the frame. */
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if ((info->savres_strategy & SAVE_INLINE_GPRS)
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&& (info->savres_strategy & REST_INLINE_GPRS))
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{
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int reg_size = TARGET_32BIT ? 4 : 8;
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int offset = info->gp_save_offset;
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if (info->push_p)
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@ -27461,6 +27462,7 @@ rs6000_get_separate_components (void)
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offset += reg_size;
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}
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}
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/* Don't mess with the hard frame pointer. */
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if (frame_pointer_needed)
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@ -27472,11 +27474,18 @@ rs6000_get_separate_components (void)
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|| (flag_pic && DEFAULT_ABI == ABI_DARWIN))
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bitmap_clear_bit (components, RS6000_PIC_OFFSET_TABLE_REGNUM);
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/* Optimize LR save and restore if we can. This is component 0. */
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/* Optimize LR save and restore if we can. This is component 0. Any
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out-of-line register save/restore routines need LR. */
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if (info->lr_save_p
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&& !(flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_DARWIN)))
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&& !(flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_DARWIN))
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&& (info->savres_strategy & SAVE_INLINE_GPRS)
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&& (info->savres_strategy & REST_INLINE_GPRS)
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&& (info->savres_strategy & SAVE_INLINE_FPRS)
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&& (info->savres_strategy & REST_INLINE_FPRS)
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&& (info->savres_strategy & SAVE_INLINE_VRS)
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&& (info->savres_strategy & REST_INLINE_VRS))
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{
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offset = info->lr_save_offset;
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int offset = info->lr_save_offset;
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if (info->push_p)
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offset += info->total_size;
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if (IN_RANGE (offset, -0x8000, 0x7fff))
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