commit 9f15fcc2718f95f1dac9e6e57aa93d84e9709930
author David Green <david.green@arm.com> Wed Nov 27 11:01:27 2019 +0000
committer David Green <david.green@arm.com> Wed Nov 27 13:32:29 2019 +0000
tree b68530b63955d00f6a60613b59397b9f3f7114ea
parent 3c1912a733bae09585d88315a7eec39cd3318fde

[ARM] Replace arm_neon_vqadds with sadd_sat

This replaces the A32 NEON vqadds, vqaddu, vqsubs and vqsubu intrinsics
with the target independent sadd_sat, uadd_sat, ssub_sat and usub_sat.
This helps generate vqadds from standard IR nodes, which might be
produced from the vectoriser. The old variants are removed in the
process.

Differential Revision: https://reviews.llvm.org/D69350

clang/lib/CodeGen/CGBuiltin.cpp

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index ecac9ae..26044f5 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -4621,10 +4621,10 @@
   NEONMAP2(vpmin_v, arm_neon_vpminu, arm_neon_vpmins, Add1ArgType | UnsignedAlts),
   NEONMAP1(vqabs_v, arm_neon_vqabs, Add1ArgType),
   NEONMAP1(vqabsq_v, arm_neon_vqabs, Add1ArgType),
-  NEONMAP2(vqadd_v, arm_neon_vqaddu, arm_neon_vqadds, Add1ArgType | UnsignedAlts),
-  NEONMAP2(vqaddq_v, arm_neon_vqaddu, arm_neon_vqadds, Add1ArgType | UnsignedAlts),
-  NEONMAP2(vqdmlal_v, arm_neon_vqdmull, arm_neon_vqadds, 0),
-  NEONMAP2(vqdmlsl_v, arm_neon_vqdmull, arm_neon_vqsubs, 0),
+  NEONMAP2(vqadd_v, uadd_sat, sadd_sat, Add1ArgType | UnsignedAlts),
+  NEONMAP2(vqaddq_v, uadd_sat, sadd_sat, Add1ArgType | UnsignedAlts),
+  NEONMAP2(vqdmlal_v, arm_neon_vqdmull, sadd_sat, 0),
+  NEONMAP2(vqdmlsl_v, arm_neon_vqdmull, ssub_sat, 0),
   NEONMAP1(vqdmulh_v, arm_neon_vqdmulh, Add1ArgType),
   NEONMAP1(vqdmulhq_v, arm_neon_vqdmulh, Add1ArgType),
   NEONMAP1(vqdmull_v, arm_neon_vqdmull, Add1ArgType),
@@ -4642,8 +4642,8 @@
   NEONMAP2(vqshlq_v, arm_neon_vqshiftu, arm_neon_vqshifts, Add1ArgType | UnsignedAlts),
   NEONMAP1(vqshlu_n_v, arm_neon_vqshiftsu, 0),
   NEONMAP1(vqshluq_n_v, arm_neon_vqshiftsu, 0),
-  NEONMAP2(vqsub_v, arm_neon_vqsubu, arm_neon_vqsubs, Add1ArgType | UnsignedAlts),
-  NEONMAP2(vqsubq_v, arm_neon_vqsubu, arm_neon_vqsubs, Add1ArgType | UnsignedAlts),
+  NEONMAP2(vqsub_v, usub_sat, ssub_sat, Add1ArgType | UnsignedAlts),
+  NEONMAP2(vqsubq_v, usub_sat, ssub_sat, Add1ArgType | UnsignedAlts),
   NEONMAP1(vraddhn_v, arm_neon_vraddhn, Add1ArgType),
   NEONMAP2(vrecpe_v, arm_neon_vrecpe, arm_neon_vrecpe, 0),
   NEONMAP2(vrecpeq_v, arm_neon_vrecpe, arm_neon_vrecpe, 0),