c31f0a0050
The prologue and epilogue emission were unbalanced in light of different strategies of async frame context emission. Adjust the epilogue emission to match the prologue emission. This makes the elision work properly as well as the deployment based. Due to the fact that the epilogue always was clearing a bit (which should not be set in the first place), the client would not notice the behavioural issue unless the deployment version was in effect.
65 lines
2.8 KiB
LLVM
65 lines
2.8 KiB
LLVM
; RUN: llc -mtriple arm64-apple-ios -filetype asm -o - %s -swift-async-fp always | FileCheck %s -check-prefix CHECK-IOS-ALWAYS
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; RUN: llc -mtriple arm64-apple-ios -filetype asm -o - %s -swift-async-fp never | FileCheck %s -check-prefix CHECK-IOS-NEVER
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; RUN: llc -mtriple arm64-apple-ios -filetype asm -o - %s -swift-async-fp auto | FileCheck %s -check-prefix CHECK-IOS-AUTO
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; RUN: llc -mtriple arm64_32-apple-watchos -filetype asm -o - %s -swift-async-fp always | FileCheck %s -check-prefix CHECK-WATCHOS-ALWAYS
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; RUN: llc -mtriple arm64_32-apple-watchos -filetype asm -o - %s -swift-async-fp never | FileCheck %s -check-prefix CHECK-WATCHOS-NEVER
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; RUN: llc -mtriple arm64_32-apple-watchos -filetype asm -o - %s -swift-async-fp auto | FileCheck %s -check-prefix CHECK-WATCHOS-AUTO
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declare i8** @llvm.swift.async.context.addr()
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define swifttailcc void @f(i8* swiftasync %ctx) {
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%1 = bitcast i8* %ctx to i8**
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%2 = load i8*, i8** %1, align 8
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%3 = tail call i8** @llvm.swift.async.context.addr()
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store i8* %2, i8** %3, align 8
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ret void
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}
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; CHECK-IOS-NEVER: sub sp, sp, #32
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; CHECK-IOS-NEVER: stp x29, x30, [sp, #16]
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; ...
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; CHECK-IOS-NEVER: ldp x29, x30, [sp, #16]
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; CHECK-IOS-NEVER: add sp, sp, #32
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; CHECK-IOS-ALWAYS: orr x29, x29, #0x1000000000000000
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; CHECK-IOS-ALWAYS: sub sp, sp, #32
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; CHECK-IOS-ALWAYS: stp x29, x30, [sp, #16]
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; ...
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; CHECK-IOS-ALWAYS: ldp x29, x30, [sp, #16]
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; CHECK-IOS-ALWAYS: and x29, x29, #0xefffffffffffffff
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; CHECK-IOS-ALWAYS: add sp, sp, #32
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; CHECK-IOS-AUTO: adrp x16, _swift_async_extendedFramePointerFlags@GOTPAGE
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; CHECK-IOS-AUTO: ldr x16, [x16, _swift_async_extendedFramePointerFlags@GOTPAGEOFF]
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; CHECK-IOS-AUTO: orr x29, x29, x16
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; CHECK-IOS-AUTO: sub sp, sp, #32
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; CHECK-IOS-AUTO: stp x29, x30, [sp, #16]
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; ...
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; CHECK-IOS-AUTO: ldp x29, x30, [sp, #16]
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; CHECK-IOS-AUTO: and x29, x29, #0xefffffffffffffff
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; CHECK-IOS-AUTO: add sp, sp, #32
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; CHECK-WATCHOS-NEVER: sub sp, sp, #32
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; CHECK-WATCHOS-NEVER: stp x29, x30, [sp, #16]
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; ...
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; CHECK-WATCHOS-NEVER: ldp x29, x30, [sp, #16]
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; CHECK-WATCHOS-NEVER: add sp, sp, #32
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; CHECK-WATCHOS-ALWAYS: orr x29, x29, #0x1000000000000000
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; CHECK-WATCHOS-ALWAYS: sub sp, sp, #32
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; CHECK-WATCHOS-ALWAYS: stp x29, x30, [sp, #16]
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; ...
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; CHECK-WATCHOS-ALWAYS: ldp x29, x30, [sp, #16]
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; CHECK-WATCHOS-ALWAYS: and x29, x29, #0xefffffffffffffff
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; CHECK-WATCHOS-ALWAYS: add sp, sp, #32
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; CHECK-WATCHOS-AUTO: adrp x16, _swift_async_extendedFramePointerFlags@GOTPAGE
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; CHECK-WATCHOS-AUTO: ldr w16, [x16, _swift_async_extendedFramePointerFlags@GOTPAGEOFF]
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; CHECK-WATCHOS-AUTO: orr x29, x29, x16, lsl #32
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; CHECK-WATCHOS-AUTO: sub sp, sp, #32
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; CHECK-WATCHOS-AUTO: stp x29, x30, [sp, #16]
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; ...
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; CHECK-WATCHOS-AUTO: ldp x29, x30, [sp, #16]
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; CHECK-WATCHOS-AUTO: and x29, x29, #0xefffffffffffffff
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; CHECK-WATCHOS-AUTO: add sp, sp, #32
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