1a5239251e
When using the -mframe-chain=aapcs or -mframe-chain=aapcs-leaf options, we cannot use r11 as an allocatable register, even if -fomit-frame-pointer is also used. This is so that r11 will always point to a valid frame record, even if we don't create one in every function.
25 lines
1.9 KiB
LLVM
25 lines
1.9 KiB
LLVM
; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=all 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=all -mattr=+aapcs-frame-chain 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=non-leaf 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=non-leaf -mattr=+aapcs-frame-chain 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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; RUN: llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=none 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-FREE
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; RUN: llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=none -mattr=+aapcs-frame-chain 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-FREE
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; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=reserved 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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; RUN: not llc -mtriple arm-arm-none-eabi -filetype asm -o - %s -frame-pointer=reserved -mattr=+aapcs-frame-chain 2>&1 | FileCheck %s --check-prefix=R7-FREE --check-prefix=R11-RESERVED
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declare void @leaf(i32 %input)
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define void @reserved_r7(i32 %input) {
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; R7-RESERVED: error: write to reserved register 'R7'
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; R7-FREE-NOT: error: write to reserved register 'R7'
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%1 = call i32 asm sideeffect "mov $0, $1", "={r7},r"(i32 %input)
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ret void
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}
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define void @reserved_r11(i32 %input) {
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; R11-RESERVED: error: write to reserved register 'R11'
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; R11-FREE-NOT: error: write to reserved register 'R11'
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%1 = call i32 asm sideeffect "mov $0, $1", "={r11},r"(i32 %input)
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ret void
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}
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