diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/CBackend/CBackend.cpp | 4 | ||||
| -rw-r--r-- | lib/Target/CBackend/Writer.cpp | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp index ae3ba80940..6e536f0729 100644 --- a/lib/Target/CBackend/CBackend.cpp +++ b/lib/Target/CBackend/CBackend.cpp @@ -126,6 +126,10 @@ namespace { // printed and an extra copy of the expr is not emitted. // static bool isInlinableInst(const Instruction &I) { + // Always inline setcc instructions, even if they are shared by multiple + // expressions. GCC generates horrible code if we don't. + if (isa<SetCondInst>(I)) return true; + // Must be an expression, must be used exactly once. If it is dead, we // emit it inline where it would go. if (I.getType() == Type::VoidTy || !I.hasOneUse() || diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp index ae3ba80940..6e536f0729 100644 --- a/lib/Target/CBackend/Writer.cpp +++ b/lib/Target/CBackend/Writer.cpp @@ -126,6 +126,10 @@ namespace { // printed and an extra copy of the expr is not emitted. // static bool isInlinableInst(const Instruction &I) { + // Always inline setcc instructions, even if they are shared by multiple + // expressions. GCC generates horrible code if we don't. + if (isa<SetCondInst>(I)) return true; + // Must be an expression, must be used exactly once. If it is dead, we // emit it inline where it would go. if (I.getType() == Type::VoidTy || !I.hasOneUse() || |