; RUN: opt -mtriple=x86_64-unknown-unknown -S -codegenprepare <%s -o - | FileCheck %s ; ; Ensure return instruction splitting ignores fake uses. ; ; IR Generated with clang -O2 -S -emit-llvm -fextend-variable-liveness test.cpp ; ;// test.cpp ;extern int bar(int); ; ;int foo2(int i) ;{ ; --i; ; if (i <= 0) ; return -1; ; return bar(i); ;} declare i32 @_Z3bari(i32) local_unnamed_addr define i32 @_Z4foo2i(i32 %i) local_unnamed_addr optdebug { entry: %dec = add nsw i32 %i, -1 %cmp = icmp slt i32 %i, 2 br i1 %cmp, label %cleanup, label %if.end if.end: ; preds = %entry %call = tail call i32 @_Z3bari(i32 %dec) ; CHECK: ret i32 %call br label %cleanup cleanup: ; preds = %entry, %if.end ; CHECK: cleanup: %retval.0 = phi i32 [ %call, %if.end ], [ -1, %entry ] tail call void (...) @llvm.fake.use(i32 %dec) ; CHECK: ret i32 -1 ret i32 %retval.0 }