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#545 Inefficient code generated in handling of global struct

None
closed-fixed
Philipp Klaus Krause
None
5
2018-10-18
2017-11-08
Philipp Klaus Krause
No

The attached example comes from a discussion at the ST STM8 forums. SDCC generates much bigger code than Cosmic here (mostly due to too many temporaries being introduced; a minor improvement could come from a different calling convention).

Philipp

1 Attachments
sample.c

Discussion

  • Philipp Klaus Krause

    Philipp Klaus Krause - 2018-10-18
    • Description has changed:

    Diff:

    --- old
+++ new
@@ -1,3 +1,3 @@
-The attached example comes from a discussion at the ST STM8 forums. SDCC gnerates much bigger code than Cosmic here (mostly due to too many temporaries being introduced; a minor improvement could come from a different callig convention).
+The attached example comes from a discussion at the ST STM8 forums. SDCC generates much bigger code than Cosmic here (mostly due to too many temporaries being introduced; a minor improvement could come from a different calling convention).

 Philipp
    • status: open --> closed-fixed
    • assigned_to: Philipp Klaus Krause
    • Group: -->
     

  • Philipp Klaus Krause

    Philipp Klaus Krause - 2018-10-18

    The generated asm improved a lot with the rematerialization support in the stm8 backend; with the pointer read improvement in [r10623], it looks okay now.

    Philipp

     

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