diff options
Diffstat (limited to 'meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0022-Inline-Expansion-of-fsqrt-builtin.patch')
| -rw-r--r-- | meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0022-Inline-Expansion-of-fsqrt-builtin.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0022-Inline-Expansion-of-fsqrt-builtin.patch b/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0022-Inline-Expansion-of-fsqrt-builtin.patch new file mode 100644 index 00000000..6de17024 --- /dev/null +++ b/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0022-Inline-Expansion-of-fsqrt-builtin.patch @@ -0,0 +1,64 @@ +From cf85f09a0fade1e7827828a3dc9a526c212f3be7 Mon Sep 17 00:00:00 2001 +From: Mahesh Bodapati <mbodapat@xilinx.com> +Date: Sat, 26 Aug 2017 19:21:39 -0700 +Subject: [PATCH] Inline Expansion of fsqrt builtin + +Inline Expansion of fsqrt builtin. The changes are made in the patch for +the inline expansion of the fsqrt builtin with fqrt instruction. The +sqrt math function takes double as argument and return double as +argument. The pattern is selected while expanding the unary op through +expand_unop which passes DFmode and the DFmode pattern was not there +returning zero. Thus the sqrt math function is not inlined and expanded. +The pattern with DFmode argument is added. Also the source and +destination argument is not same the DF through two different +consecutive registers with lower 32 bit is the argument passed to sqrt +and the higher 32 bit is zero. If the source and destinations are +different the DFmode 64 bits registers is not set properly giving the +problem in runtime. Such changes are taken care in the implementation of +the pattern for DFmode for inline expansion of the sqrt. + +ChangeLog: + +2015-06-16 Ajit Agarwal <ajitkum@xilinx.com> + Nagaraju Mekala <nagaraju.mekala@xilinx.com> + + * config/microblaze/microblaze.md (sqrtdf2): New + pattern. + +Signed-off-by: Nagaraju Mekala <nagaraju.mekala@xilinx.com> +Signed-off-by: Ajit Agarwal <ajitkum@xilinx.com> +Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com> +Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com> +Upstream-Status: Pending +--- + gcc/config/microblaze/microblaze.md | 14 ++++++++++++++ + 1 file changed, 14 insertions(+) + +diff --git a/gcc/config/microblaze/microblaze.md b/gcc/config/microblaze/microblaze.md +index a3954a24b6..13f8803428 100644 +--- a/gcc/config/microblaze/microblaze.md ++++ b/gcc/config/microblaze/microblaze.md +@@ -449,6 +449,20 @@ + (set_attr "mode" "SF") + (set_attr "length" "4")]) + ++(define_insn "sqrtdf2" ++ [(set (match_operand:DF 0 "register_operand" "=d") ++ (sqrt:DF (match_operand:DF 1 "register_operand" "dG")))] ++ "TARGET_HARD_FLOAT && TARGET_FLOAT_SQRT" ++ { ++ if (REGNO (operands[0]) == REGNO (operands[1])) ++ return "fsqrt\t%0,%1"; ++ else ++ return "fsqrt\t%0,%1\n\taddk\t%D0,%D1,r0"; ++ } ++ [(set_attr "type" "fsqrt") ++ (set_attr "mode" "SF") ++ (set_attr "length" "4")]) ++ + (define_insn "fix_truncsfsi2" + [(set (match_operand:SI 0 "register_operand" "=d") + (fix:SI (match_operand:SF 1 "register_operand" "d")))] +-- +2.14.2 + |