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| author | Jakub Jelinek <jakub@redhat.com> | 2008-04-23 00:33:48 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2008-04-23 00:33:48 +0200 |
| commit | 63cb92c1ee60811725c0f0b2512e7edcded5c7d4 (patch) | |
| tree | 6c47921f4947f086070ce6f76eeb80c06959ae83 /gcc/builtins.c | |
| parent | d7b5fa315012328dbd9b2fd6cb0e1c82942752c3 (diff) | |
| download | gcc-63cb92c1ee60811725c0f0b2512e7edcded5c7d4.zip gcc-63cb92c1ee60811725c0f0b2512e7edcded5c7d4.tar.gz gcc-63cb92c1ee60811725c0f0b2512e7edcded5c7d4.tar.bz2 | |
re PR rtl-optimization/36017 (Miscompilation of tail call sqrt)
PR rtl-optimization/36017
* builtins.c (expand_errno_check): Clear CALL_EXPR_TAILCALL before
expanding the library call.
* gcc.dg/pr36017.c: New test.
From-SVN: r134569
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index d5c4f92..761a658 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -1804,6 +1804,9 @@ expand_errno_check (tree exp, rtx target) } #endif + /* Make sure the library call isn't expanded as a tail call. */ + CALL_EXPR_TAILCALL (exp) = 0; + /* We can't set errno=EDOM directly; let the library call do it. Pop the arguments right away in case the call gets deleted. */ NO_DEFER_POP; |