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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2016-12-16 13:14:46 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wilco@gcc.gnu.org> | 2016-12-16 13:14:46 +0000 |
| commit | ed2def05fefdf59e42ad6f13262e5323030e1610 (patch) | |
| tree | 09edc8080838f8853d9e7cbeb41973402f229efa /gcc/go | |
| parent | c67b6f268397b2fc20e72da19e276d2b027ddee4 (diff) | |
| download | gcc-ed2def05fefdf59e42ad6f13262e5323030e1610.zip gcc-ed2def05fefdf59e42ad6f13262e5323030e1610.tar.gz gcc-ed2def05fefdf59e42ad6f13262e5323030e1610.tar.bz2 | |
The negdi2 patterns for ARM and Thumb-2 are duplicated because Thumb-2 doesn't support RSC with an immediate.
The negdi2 patterns for ARM and Thumb-2 are duplicated because Thumb-2
doesn't support RSC with an immediate. We can however emulate RSC with
zero using a shifted SBC. If we add this to subsi3_carryin the negdi
patterns can be merged, simplifying things a bit. This should generate
identical code in all cases.
gcc/
* config/arm/arm.md (subsi3_carryin): Add Thumb-2 RSC #0.
(arm_negdi2) Rename to negdi2_insn, allow on Thumb-2.
* config/arm/thumb2.md (thumb2_negdi2): Remove pattern.
From-SVN: r243745
Diffstat (limited to 'gcc/go')
0 files changed, 0 insertions, 0 deletions