41 lines
1.1 KiB
LLVM
41 lines
1.1 KiB
LLVM
; RUN: llc < %s -march x86-64 | FileCheck %s --check-prefix=NO-OPTION
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; RUN: llc < %s -march x86-64 -disable-tail-calls | FileCheck %s --check-prefix=DISABLE-TRUE
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; RUN: llc < %s -march x86-64 -disable-tail-calls=false | FileCheck %s --check-prefix=DISABLE-FALSE
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; Check that command line option "-disable-tail-calls" overrides function
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; attribute "disable-tail-calls".
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; NO-OPTION-LABEL: {{\_?}}func_attr
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; NO-OPTION: callq {{\_?}}callee
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; DISABLE-FALSE-LABEL: {{\_?}}func_attr
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; DISABLE-FALSE: jmp {{\_?}}callee
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; DISABLE-TRUE-LABEL: {{\_?}}func_attr
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; DISABLE-TRUE: callq {{\_?}}callee
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define i32 @func_attr(i32 %a) #0 {
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entry:
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%call = tail call i32 @callee(i32 %a)
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ret i32 %call
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}
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; NO-OPTION-LABEL: {{\_?}}func_noattr
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; NO-OPTION: jmp {{\_?}}callee
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; DISABLE-FALSE-LABEL: {{\_?}}func_noattr
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; DISABLE-FALSE: jmp {{\_?}}callee
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; DISABLE-TRUE-LABEL: {{\_?}}func_noattr
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; DISABLE-TRUE: callq {{\_?}}callee
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define i32 @func_noattr(i32 %a) {
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entry:
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%call = tail call i32 @callee(i32 %a)
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ret i32 %call
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}
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declare i32 @callee(i32)
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attributes #0 = { "disable-tail-calls"="true" }
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