1; RUN: llc < %s -march x86-64 | FileCheck %s --check-prefix=NO-OPTION 2; RUN: llc < %s -march x86-64 -disable-tail-calls | FileCheck %s --check-prefix=DISABLE-TRUE 3; RUN: llc < %s -march x86-64 -disable-tail-calls=false | FileCheck %s --check-prefix=DISABLE-FALSE 4 5; Check that command line option "-disable-tail-calls" overrides function 6; attribute "disable-tail-calls". 7 8; NO-OPTION-LABEL: {{\_?}}func_attr 9; NO-OPTION: callq {{\_?}}callee 10 11; DISABLE-FALSE-LABEL: {{\_?}}func_attr 12; DISABLE-FALSE: jmp {{\_?}}callee 13 14; DISABLE-TRUE-LABEL: {{\_?}}func_attr 15; DISABLE-TRUE: callq {{\_?}}callee 16 17define i32 @func_attr(i32 %a) #0 { 18entry: 19 %call = tail call i32 @callee(i32 %a) 20 ret i32 %call 21} 22 23; NO-OPTION-LABEL: {{\_?}}func_noattr 24; NO-OPTION: jmp {{\_?}}callee 25 26; DISABLE-FALSE-LABEL: {{\_?}}func_noattr 27; DISABLE-FALSE: jmp {{\_?}}callee 28 29; DISABLE-TRUE-LABEL: {{\_?}}func_noattr 30; DISABLE-TRUE: callq {{\_?}}callee 31 32define i32 @func_noattr(i32 %a) { 33entry: 34 %call = tail call i32 @callee(i32 %a) 35 ret i32 %call 36} 37 38declare i32 @callee(i32) 39 40attributes #0 = { "disable-tail-calls"="true" } 41