forked from OSchip/llvm-project
41 lines
1.1 KiB
LLVM
41 lines
1.1 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefix=NO-OPTION
|
|
; RUN: llc < %s -mtriple=x86_64-- -disable-tail-calls | FileCheck %s --check-prefix=DISABLE-TRUE
|
|
; RUN: llc < %s -mtriple=x86_64-- -disable-tail-calls=false | FileCheck %s --check-prefix=DISABLE-FALSE
|
|
|
|
; Check that command line option "-disable-tail-calls" overrides function
|
|
; attribute "disable-tail-calls".
|
|
|
|
; NO-OPTION-LABEL: {{\_?}}func_attr
|
|
; NO-OPTION: callq {{\_?}}callee
|
|
|
|
; DISABLE-FALSE-LABEL: {{\_?}}func_attr
|
|
; DISABLE-FALSE: jmp {{\_?}}callee
|
|
|
|
; DISABLE-TRUE-LABEL: {{\_?}}func_attr
|
|
; DISABLE-TRUE: callq {{\_?}}callee
|
|
|
|
define tailcc i32 @func_attr(i32 %a) #0 {
|
|
entry:
|
|
%call = tail call tailcc i32 @callee(i32 %a)
|
|
ret i32 %call
|
|
}
|
|
|
|
; NO-OPTION-LABEL: {{\_?}}func_noattr
|
|
; NO-OPTION: jmp {{\_?}}callee
|
|
|
|
; DISABLE-FALSE-LABEL: {{\_?}}func_noattr
|
|
; DISABLE-FALSE: jmp {{\_?}}callee
|
|
|
|
; DISABLE-TRUE-LABEL: {{\_?}}func_noattr
|
|
; DISABLE-TRUE: callq {{\_?}}callee
|
|
|
|
define tailcc i32 @func_noattr(i32 %a) {
|
|
entry:
|
|
%call = tail call tailcc i32 @callee(i32 %a)
|
|
ret i32 %call
|
|
}
|
|
|
|
declare tailcc i32 @callee(i32)
|
|
|
|
attributes #0 = { "disable-tail-calls"="true" }
|