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d7f173214f
I'm doing this in two phases for a better "git blame" record. This commit removes the previous AArch64 backend and redirects all functionality to ARM64. It also deduplicates test-lines and removes orphaned AArch64 tests. The next step will be "git mv ARM64 AArch64" and rewire most of the tests. Hopefully LLVM is still functional, though it would be even better if no-one ever had to care because the rename happens straight afterwards. llvm-svn: 209576
74 lines
1.9 KiB
LLVM
74 lines
1.9 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=arm64-none-linux-gnu -tailcallopt | FileCheck %s --check-prefix=CHECK-ARM64
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; This test is designed to be run in the situation where the
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; call-frame is not reserved (hence disable-fp-elim), but where
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; callee-pop can occur (hence tailcallopt).
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declare fastcc void @will_pop([8 x i32], i32 %val)
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define fastcc void @foo(i32 %in) {
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; CHECK-LABEL: foo:
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%addr = alloca i8, i32 %in
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; Normal frame setup stuff:
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; CHECK: sub sp, sp,
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; CHECK: stp x29, x30
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; CHECK-ARM64: stp x29, x30, [sp, #-16]!
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; CHECK-ARM64: mov x29, sp
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; Reserve space for call-frame:
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; CHECK: sub sp, sp, #16
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; CHECK-ARM64: sub sp, sp, #16
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call fastcc void @will_pop([8 x i32] undef, i32 42)
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; CHECK: bl will_pop
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; CHECK-ARM64: bl will_pop
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; Since @will_pop is fastcc with tailcallopt, it will put the stack
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; back where it needs to be, we shouldn't duplicate that
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; CHECK-NOT: sub sp, sp, #16
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; CHECK-NOT: add sp, sp,
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; CHECK-ARM64-NOT: sub sp, sp, #16
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; CHECK-ARM64-NOT: add sp, sp,
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; CHECK: ldp x29, x30
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; CHECK: add sp, sp,
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; CHECK-ARM64: mov sp, x29
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; CHECK-ARM64: ldp x29, x30, [sp], #16
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ret void
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}
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declare void @wont_pop([8 x i32], i32 %val)
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define void @foo1(i32 %in) {
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; CHECK-LABEL: foo1:
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%addr = alloca i8, i32 %in
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; Normal frame setup again
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; CHECK: sub sp, sp,
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; CHECK: stp x29, x30
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; CHECK-ARM64: stp x29, x30, [sp, #-16]!
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; CHECK-ARM64: mov x29, sp
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; Reserve space for call-frame
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; CHECK: sub sp, sp, #16
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; CHECK-ARM64: sub sp, sp, #16
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call void @wont_pop([8 x i32] undef, i32 42)
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; CHECK: bl wont_pop
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; CHECK-ARM64: bl wont_pop
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; This time we *do* need to unreserve the call-frame
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; CHECK: add sp, sp, #16
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; CHECK-ARM64: add sp, sp, #16
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; Check for epilogue (primarily to make sure sp spotted above wasn't
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; part of it).
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; CHECK: ldp x29, x30
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; CHECK: add sp, sp,
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; CHECK-ARM64: mov sp, x29
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; CHECK-ARM64: ldp x29, x30, [sp], #16
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ret void
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}
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