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https://github.com/c64scene-ar/llvm-6502.git
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1e8839302b
This implements the review suggestion to simplify the AArch64 backend. If we later discover that we *really* need the extra complexity of the ConstantIslands pass for performance reasons it can be resurrected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175258 91177308-0d34-0410-b5e6-96231b3b80d8
56 lines
1.7 KiB
LLVM
56 lines
1.7 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
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@var32 = global i32 0
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@var64 = global i64 0
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define void @foo() {
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; CHECK: foo:
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%val32 = load i32* @var32
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%val64 = load i64* @var64
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%val32_lit32 = and i32 %val32, 123456785
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store volatile i32 %val32_lit32, i32* @var32
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI0_[0-9]+]]
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; CHECK: ldr {{w[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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%val64_lit32 = and i64 %val64, 305402420
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store volatile i64 %val64_lit32, i64* @var64
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI0_[0-9]+]]
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; CHECK: ldr {{w[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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%val64_lit32signed = and i64 %val64, -12345678
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store volatile i64 %val64_lit32signed, i64* @var64
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI0_[0-9]+]]
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; CHECK: ldrsw {{x[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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%val64_lit64 = and i64 %val64, 1234567898765432
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store volatile i64 %val64_lit64, i64* @var64
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI0_[0-9]+]]
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; CHECK: ldr {{x[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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ret void
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}
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@varfloat = global float 0.0
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@vardouble = global double 0.0
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define void @floating_lits() {
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; CHECK: floating_lits:
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%floatval = load float* @varfloat
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%newfloat = fadd float %floatval, 128.0
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI1_[0-9]+]]
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; CHECK: ldr {{s[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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; CHECK: fadd
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store float %newfloat, float* @varfloat
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%doubleval = load double* @vardouble
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%newdouble = fadd double %doubleval, 129.0
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; CHECK: adrp x[[LITBASE:[0-9]+]], [[CURLIT:.LCPI1_[0-9]+]]
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; CHECK: ldr {{d[0-9]+}}, [x[[LITBASE]], #:lo12:[[CURLIT]]]
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; CHECK: fadd
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store double %newdouble, double* @vardouble
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ret void
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}
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