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 17 define i32 @func_attr(i32 %a) #0 { 18 entry: 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 32 define i32 @func_noattr(i32 %a) { 33 entry: 34 %call = tail call i32 @callee(i32 %a) 35 ret i32 %call 36 } 37 38 declare i32 @callee(i32) 39 40 attributes #0 = { "disable-tail-calls"="true" } 41
