Small Device C Compiler (SDCC) / Bugs / #1928 gen{,End}Function does not properly track registers to save

The Small Device C Compiler (SDCC), targeting 8-bit architectures

#1928 gen{,End}Function does not properly track registers to save

Status: closed-fixed

Owner: Maarten Brock

Labels: mcs51(8051) target (367)

Category: MCS51

Priority: 5

Updated: 2014-05-04

Created: 2012-02-06

Creator: Thomas Sailer

Private: No

gen{,End}Function currently, when producing the pro-/epilogue for a callee_saved function, does not track whether any caller_saved functions are called. In that case, it should save all registers, but it doesn't, violating the callee_saved property.

SDCC Version 3.1.0 #7066 (Dec 12 2011) (Linux)

The code generated for y should first push all registers, then call x, then pop all registers. Currently, it doesn't do that.

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Thomas Sailer - 2012-02-06

callee_saved calling caller_saved

x.c

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Maarten Brock - 2014-05-04

assigned_to: Maarten Brock

Category: --> MCS51
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Maarten Brock - 2014-05-04

Fixed in SDCC [r9021]

status: open --> closed-fixed

Last edit: Maarten Brock 2014-05-04
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gen{,End}Function does not properly track registers to save

The Small Device C Compiler (SDCC), targeting 8-bit architectures

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#1928 gen{,End}Function does not properly track registers to save

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