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| author | Reid Kleckner <rnk@google.com> | 2018-11-01 19:54:45 +0000 |
|---|---|---|
| committer | Reid Kleckner <rnk@google.com> | 2018-11-01 19:54:45 +0000 |
| commit | 4dc0b1ac60f947c23bbb0e20a7efb636c214b0a8 (patch) | |
| tree | be694515ce144c8d6ab1d1031b1f44817faac9ae /clang/lib/CodeGen/CGBuiltin.cpp | |
| parent | de4f7747837cbd9db9cb393c05283964fbc4a985 (diff) | |
| download | bcm5719-llvm-4dc0b1ac60f947c23bbb0e20a7efb636c214b0a8.tar.gz bcm5719-llvm-4dc0b1ac60f947c23bbb0e20a7efb636c214b0a8.zip | |
Fix clang -Wimplicit-fallthrough warnings across llvm, NFC
This patch should not introduce any behavior changes. It consists of
mostly one of two changes:
1. Replacing fall through comments with the LLVM_FALLTHROUGH macro
2. Inserting 'break' before falling through into a case block consisting
of only 'break'.
We were already using this warning with GCC, but its warning behaves
slightly differently. In this patch, the following differences are
relevant:
1. GCC recognizes comments that say "fall through" as annotations, clang
doesn't
2. GCC doesn't warn on "case N: foo(); default: break;", clang does
3. GCC doesn't warn when the case contains a switch, but falls through
the outer case.
I will enable the warning separately in a follow-up patch so that it can
be cleanly reverted if necessary.
Reviewers: alexfh, rsmith, lattner, rtrieu, EricWF, bollu
Differential Revision: https://reviews.llvm.org/D53950
llvm-svn: 345882
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index bf53e25b2f9..2c7a3d720a7 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -6867,7 +6867,7 @@ Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID, case NEON::BI__builtin_neon_vcvth_f16_u32: case NEON::BI__builtin_neon_vcvth_f16_u64: usgn = true; - // FALL THROUGH + LLVM_FALLTHROUGH; case NEON::BI__builtin_neon_vcvth_f16_s16: case NEON::BI__builtin_neon_vcvth_f16_s32: case NEON::BI__builtin_neon_vcvth_f16_s64: { @@ -6887,7 +6887,7 @@ Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID, } case NEON::BI__builtin_neon_vcvth_u16_f16: usgn = true; - // FALL THROUGH + LLVM_FALLTHROUGH; case NEON::BI__builtin_neon_vcvth_s16_f16: { Ops.push_back(EmitScalarExpr(E->getArg(0))); Ops[0] = Builder.CreateBitCast(Ops[0], HalfTy); @@ -6897,7 +6897,7 @@ Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID, } case NEON::BI__builtin_neon_vcvth_u32_f16: usgn = true; - // FALL THROUGH + LLVM_FALLTHROUGH; case NEON::BI__builtin_neon_vcvth_s32_f16: { Ops.push_back(EmitScalarExpr(E->getArg(0))); Ops[0] = Builder.CreateBitCast(Ops[0], HalfTy); @@ -6907,7 +6907,7 @@ Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID, } case NEON::BI__builtin_neon_vcvth_u64_f16: usgn = true; - // FALL THROUGH + LLVM_FALLTHROUGH; case NEON::BI__builtin_neon_vcvth_s64_f16: { Ops.push_back(EmitScalarExpr(E->getArg(0))); Ops[0] = Builder.CreateBitCast(Ops[0], HalfTy); |
