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| author | Tim Northover <tnorthover@apple.com> | 2016-08-23 18:12:58 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2016-08-23 18:12:58 +0000 |
| commit | c0f6c9b8c16d90ca6886daa8679685d485acc8a6 (patch) | |
| tree | 5eb76b5b62996d6c52c0ce2b2d2899e0abb96720 /clang/test/Driver/frame-pointer-elim.c | |
| parent | c3ea5e1afc17f110c0ade9a34b265408cdcefeeb (diff) | |
| download | bcm5719-llvm-c0f6c9b8c16d90ca6886daa8679685d485acc8a6.tar.gz bcm5719-llvm-c0f6c9b8c16d90ca6886daa8679685d485acc8a6.zip | |
ARM-Darwin: ignore and diagnose attempts to omit frame pointer.
iOS (and other 32-bit ARM variants) always require a valid frame pointer to
improve backtraces. Previously the -fomit-frame-pointer and
-momit-leaf-frame-pointer options were being silently discarded via hacks in
the backend. It's better if Clang configures itself to emit the correct IR and
warns about (ignored) attempts to override this.
llvm-svn: 279546
Diffstat (limited to 'clang/test/Driver/frame-pointer-elim.c')
| -rw-r--r-- | clang/test/Driver/frame-pointer-elim.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/clang/test/Driver/frame-pointer-elim.c b/clang/test/Driver/frame-pointer-elim.c index 139c0ccb952..d2a2715731c 100644 --- a/clang/test/Driver/frame-pointer-elim.c +++ b/clang/test/Driver/frame-pointer-elim.c @@ -35,6 +35,24 @@ // RUN: FileCheck --check-prefix=OMIT_LEAF %s // OMIT_LEAF: "-momit-leaf-frame-pointer" +// RUN: %clang -### -target armv7s-apple-ios -fomit-frame-pointer %s 2>&1 | \ +// RUN: FileCheck --check-prefix=WARN-OMIT-7S %s +// WARN-OMIT-7S: warning: optimization flag '-fomit-frame-pointer' is not supported for target 'armv7s' +// WARN-OMIT-7S: "-mdisable-fp-elim" +// WARN-OMIT-7S-NOT: "-momit-leaf-frame-pointer" + +// RUN: %clang -### -target armv7k-apple-watchos -fomit-frame-pointer %s 2>&1 | \ +// RUN: FileCheck --check-prefix=WARN-OMIT-7K %s +// WARN-OMIT-7K: warning: optimization flag '-fomit-frame-pointer' is not supported for target 'armv7k' +// WARN-OMIT-7K: "-mdisable-fp-elim" +// WARN-OMIT-7K-NOT: "-momit-leaf-frame-pointer" + +// RUN: %clang -### -target armv7s-apple-ios8.0 -momit-leaf-frame-pointer %s 2>&1 | \ +// RUN: FileCheck --check-prefix=WARN-OMIT-LEAF-7S %s +// WARN-OMIT-LEAF-7S: warning: optimization flag '-momit-leaf-frame-pointer' is not supported for target 'armv7s' +// WARN-OMIT-LEAF-7S: "-mdisable-fp-elim" +// WARN-OMIT-LEAF-7S-NOT: "-momit-leaf-frame-pointer" + // On the PS4, we default to omitting the frame pointer on leaf functions // (OMIT_LEAF check line is above) // RUN: %clang -### -target x86_64-scei-ps4 -S %s 2>&1 | \ |
