On 1/19/18 12:28 AM, Jakub Jelinek wrote:
+#ifndef DEFAULT_INCOMING_FRAME_SP_OFFSET
+#define DEFAULT_INCOMING_FRAME_SP_OFFSET INCOMING_FRAME_SP_OFFSET
+#endif
...
+ /* If the current function starts with a non-standard incoming frame
+ sp offset, emit a note before the first instruction. */
+ if (entry
+ && DEFAULT_INCOMING_FRAME_SP_OFFSET != INCOMING_FRAME_SP_OFFSET)
+ {
This triggers a warning on s390x:
/home/andreas/build/../gcc/gcc/dwarf2cfi.c: In function ‘void
scan_trace(dw_trace_info*, bool)’:
/home/andreas/build/../gcc/gcc/dwarf2cfi.c:2541:43: error: self-comparison
always evaluates to false
[-Werror=tautol
ogical-compare]
2541 | && DEFAULT_INCOMING_FRAME_SP_OFFSET != INCOMING_FRAME_SP_OFFSET)
| ^~
Andreas
