diff options
Diffstat (limited to 'meta-xilinx/meta-microblaze/recipes-devtools/gcc/gcc-10/0020-Patch-microblaze-Inline-Expansion-of-fsqrt-builtin.patch')
| -rw-r--r-- | meta-xilinx/meta-microblaze/recipes-devtools/gcc/gcc-10/0020-Patch-microblaze-Inline-Expansion-of-fsqrt-builtin.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/meta-xilinx/meta-microblaze/recipes-devtools/gcc/gcc-10/0020-Patch-microblaze-Inline-Expansion-of-fsqrt-builtin.patch b/meta-xilinx/meta-microblaze/recipes-devtools/gcc/gcc-10/0020-Patch-microblaze-Inline-Expansion-of-fsqrt-builtin.patch new file mode 100644 index 000000000..cc1c3d7ee --- /dev/null +++ b/meta-xilinx/meta-microblaze/recipes-devtools/gcc/gcc-10/0020-Patch-microblaze-Inline-Expansion-of-fsqrt-builtin.patch @@ -0,0 +1,61 @@ +From 1bbf48097cf2da98e03139b499a5a74bc68e6abc Mon Sep 17 00:00:00 2001 +From: Mahesh Bodapati <mbodapat@xilinx.com> +Date: Tue, 17 Jan 2017 17:11:04 +0530 +Subject: [PATCH 20/58] [Patch,microblaze]: 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 <nmekala@xilinx.com> + + * config/microblaze/microblaze.md (sqrtdf2): New + pattern. + +Signed-off-by:Ajit Agarwal ajitkum@xilinx.com + Nagaraju Mekala nmekala@xilinx.com +--- + 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 8f9baec826b..986d9c3aa25 100644 +--- a/gcc/config/microblaze/microblaze.md ++++ b/gcc/config/microblaze/microblaze.md +@@ -451,6 +451,20 @@ + (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")))] +-- +2.17.1 + |