mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
b4dc0233c9
This was done with the following sed invocation to catch label lines demarking function boundaries:
sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll
which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186258 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.2 KiB
LLVM
70 lines
2.2 KiB
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s
|
|
|
|
@var32 = global [3 x i32] zeroinitializer
|
|
@var64 = global [3 x i64] zeroinitializer
|
|
@var32_align64 = global [3 x i32] zeroinitializer, align 8
|
|
|
|
define i64 @test_align32() {
|
|
; CHECK-LABEL: test_align32:
|
|
%addr = bitcast [3 x i32]* @var32 to i64*
|
|
|
|
; Since @var32 is only guaranteed to be aligned to 32-bits, it's invalid to
|
|
; emit an "LDR x0, [x0, #:lo12:var32] instruction to implement this load.
|
|
%val = load i64* %addr
|
|
; CHECK: adrp [[HIBITS:x[0-9]+]], var32
|
|
; CHECK: add x[[ADDR:[0-9]+]], [[HIBITS]], #:lo12:var32
|
|
; CHECK: ldr x0, [x[[ADDR]]]
|
|
|
|
ret i64 %val
|
|
}
|
|
|
|
define i64 @test_align64() {
|
|
; CHECK-LABEL: test_align64:
|
|
%addr = bitcast [3 x i64]* @var64 to i64*
|
|
|
|
; However, var64 *is* properly aligned and emitting an adrp/add/ldr would be
|
|
; inefficient.
|
|
%val = load i64* %addr
|
|
; CHECK: adrp x[[HIBITS:[0-9]+]], var64
|
|
; CHECK-NOT: add x[[HIBITS]]
|
|
; CHECK: ldr x0, [x[[HIBITS]], #:lo12:var64]
|
|
|
|
ret i64 %val
|
|
}
|
|
|
|
define i64 @test_var32_align64() {
|
|
; CHECK-LABEL: test_var32_align64:
|
|
%addr = bitcast [3 x i32]* @var32_align64 to i64*
|
|
|
|
; Since @var32 is only guaranteed to be aligned to 32-bits, it's invalid to
|
|
; emit an "LDR x0, [x0, #:lo12:var32] instruction to implement this load.
|
|
%val = load i64* %addr
|
|
; CHECK: adrp x[[HIBITS:[0-9]+]], var32_align64
|
|
; CHECK-NOT: add x[[HIBITS]]
|
|
; CHECK: ldr x0, [x[[HIBITS]], #:lo12:var32_align64]
|
|
|
|
ret i64 %val
|
|
}
|
|
|
|
@yet_another_var = external global {i32, i32}
|
|
|
|
define i64 @test_yet_another_var() {
|
|
; CHECK-LABEL: test_yet_another_var:
|
|
|
|
; @yet_another_var has a preferred alignment of 8, but that's not enough if
|
|
; we're going to be linking against other things. Its ABI alignment is only 4
|
|
; so we can't fold the load.
|
|
%val = load i64* bitcast({i32, i32}* @yet_another_var to i64*)
|
|
; CHECK: adrp [[HIBITS:x[0-9]+]], yet_another_var
|
|
; CHECK: add x[[ADDR:[0-9]+]], [[HIBITS]], #:lo12:yet_another_var
|
|
; CHECK: ldr x0, [x[[ADDR]]]
|
|
ret i64 %val
|
|
}
|
|
|
|
define i64()* @test_functions() {
|
|
; CHECK-LABEL: test_functions:
|
|
ret i64()* @test_yet_another_var
|
|
; CHECK: adrp [[HIBITS:x[0-9]+]], test_yet_another_var
|
|
; CHECK: add x0, [[HIBITS]], #:lo12:test_yet_another_var
|
|
}
|