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x86: Emit the TLS call after deleted instructions

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For a basic block with only deleted instructions:

(code_label 348 23 349 45 3 (nil) [0 uses])
(note 349 348 436 45 [bb 45] NOTE_INSN_BASIC_BLOCK)
(note 436 349 362 45 NOTE_INSN_DELETED)

emit the TLS call after deleted instructions.

gcc/

	PR target/122906
	* config/i386/i386-features.cc (ix86_emit_tls_call): Emit the
	TLS call after deleted instructions.

gcc/testsuite/

	PR target/122906
	* g++.target/i386/pr122906-1.C: New test.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
H.J. Lu
2025-12-01 10:05:44 +08:00
parent 8de45537d2
commit c44586acdc
2 changed files with 1073 additions and 0 deletions
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8
gcc/config/i386/i386-features.cc
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@@ -3947,11 +3947,19 @@ ix86_emit_tls_call (rtx tls_set, x86_cse_kind kind, basic_block bb,
(note 2 3 5 2 NOTE_INSN_FUNCTION_BEG)
(debug_insn 5 2 16 2 (debug_marker) "x.c":6:3 -1 (nil))
or a basic block with only deleted instructions:
(code_label 348 23 349 45 3 (nil) [0 uses])
(note 349 348 436 45 [bb 45] NOTE_INSN_BASIC_BLOCK)
(note 436 349 362 45 NOTE_INSN_DELETED)
*/
gcc_assert (DEBUG_INSN_P (insn)
|| (NOTE_P (insn)
&& ((NOTE_KIND (insn)
== NOTE_INSN_FUNCTION_BEG)
|| (NOTE_KIND (insn)
== NOTE_INSN_DELETED)
|| (NOTE_KIND (insn)
== NOTE_INSN_BASIC_BLOCK))));
insn = NULL;

1065
gcc/testsuite/g++.target/i386/pr122906-1.C Normal file
View File

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