[gcc(refs/vendors/riscv/heads/gcc-14-with-riscv-opts)] RISC-V: Fix snafu in SI mode splitters patch

[Jeff Law via Gcc-cvs]

https://gcc.gnu.org/g:bb13ddff10923828389cf21cdb4643aa6225b37c

commit bb13ddff10923828389cf21cdb4643aa6225b37c
Author: Vineet Gupta <vine...@rivosinc.com>
Date:   Tue Jul 23 15:12:11 2024 -0700

    RISC-V: Fix snafu in SI mode splitters patch
    
    SPEC2017 perlbench for RISC-V was broke as runtime output mismatch
    failure.
    
    > 3830:  mbox2: 
dWshe3Aa1EULre4CT5O/ErYFrk+o/EOoebA1kTVjQVQQH2EjT5fHcYnwjj2MdBmZu5y3Ce4Ei4QQZo/SNrry9g
    >        mbox2: 
uuWPimQiU0D4UrwFP+LS0lFNph4qL43WV1A6T3tHleatIOUaHixhrJU9NoA2lc9KjwYpdEL0lNTXkvo8ymNHzA
    >               ^
    > 3832:  mbox3: 
8f4jdv6GIf0lX3DcdwRdEm6/aZwnmGX6n86GzCvmkwTKFXQjwlwVHc8jy8XlcyiIPr3yXTkgVOiP3cRYvyYQPg
    >        mbox3: 
9xQySgP6qbhfxl8Usu1WfGA5UhStB5AN31wueGM6OF4Jp59DkqJPu6ksGblOU5u0nQapQC1e9oYIs16a2mq2NA
    >               ^
    > specdiff run completed
    
    Edwin bisected this to 273f16a125c4 ("[v3][RISC-V] Handle bit
    manipulation of SImode values") which had the operands swapped in one
    of the new splitters introduced.
    
    No test as reducer narrows it to down to the exact test introduced by
    the original commit.
    
    gcc/ChangeLog:
            * config/riscv/bitmanip.md: Fix splitter.
    
    Reported-by: Edwin Lu <e...@rivosinc.com>
    Signed-off-by: Vineet Gupta <vine...@rivosinc.com>
    (cherry picked from commit 806927111cf388a2d8cd54072269601f677767cf)

Diff:
---
 gcc/config/riscv/bitmanip.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/riscv/bitmanip.md b/gcc/config/riscv/bitmanip.md
index 6b720992ca3..9fc5215d6e3 100644
--- a/gcc/config/riscv/bitmanip.md
+++ b/gcc/config/riscv/bitmanip.md
@@ -675,7 +675,7 @@
   "#"
   "&& reload_completed"
    [(set (match_dup 4) (match_dup 2))
-    (set (match_dup 4) (and:DI (not:DI (match_dup 4)) (match_dup 1)))
+    (set (match_dup 4) (and:DI (not:DI (match_dup 1)) (match_dup 4)))
     (set (match_dup 0) (any_or:DI (ashift:DI (const_int 1) (match_dup 5)) 
(match_dup 3)))]
   { operands[5] = gen_lowpart (QImode, operands[4]); }
   [(set_attr "type" "bitmanip")])