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57 lines
1.8 KiB
57 lines
1.8 KiB
4 months ago
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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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; RUN: llc < %s -mtriple=riscv32-unknown-elf \
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; RUN: | FileCheck %s --check-prefixes=CALLER1,NOTAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \
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; RUN: | FileCheck %s --check-prefixes=CALLER1,NOTAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \
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; RUN: | FileCheck %s --check-prefixes=CALLER1,TAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf \
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; RUN: | FileCheck %s --check-prefixes=CALLER2,TAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \
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; RUN: | FileCheck %s --check-prefixes=CALLER2,NOTAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \
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; RUN: | FileCheck %s --check-prefixes=CALLER2,TAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf \
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; RUN: | FileCheck %s --check-prefixes=CALLER3,TAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \
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; RUN: | FileCheck %s --check-prefixes=CALLER3,NOTAIL
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; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \
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; RUN: | FileCheck %s --check-prefixes=CALLER3,TAIL
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; CALLER1-LABEL: {{\_?}}caller1
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; CALLER2-LABEL: {{\_?}}caller2
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; CALLER3-LABEL: {{\_?}}caller3
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; NOTAIL-NOT: tail callee
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; NOTAIL: call callee
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; TAIL: tail callee
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; TAIL-NOT: call callee
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; Function with attribute #0 = { "disable-tail-calls"="true" }
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define i32 @caller1(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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; Function with attribute #1 = { "disable-tail-calls"="false" }
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define i32 @caller2(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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define i32 @caller3(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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attributes #1 = { "disable-tail-calls"="false" }
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