mirror of
https://github.com/c64scene-ar/llvm-6502.git
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72062f5744
This patch adds support for AArch64 (ARM's 64-bit architecture) to
LLVM in the "experimental" category. Currently, it won't be built
unless requested explicitly.
This initial commit should have support for:
+ Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions
(except the late addition CRC instructions).
+ CodeGen features required for C++03 and C99.
+ Compilation for the "small" memory model: code+static data <
4GB.
+ Absolute and position-independent code.
+ GNU-style (i.e. "__thread") TLS.
+ Debugging information.
The principal omission, currently, is performance tuning.
This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.
Further reviews would be gratefully received.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174054 91177308-0d34-0410-b5e6-96231b3b80d8
232 lines
4.6 KiB
LLVM
232 lines
4.6 KiB
LLVM
; RUN: llc -march=aarch64 < %s | FileCheck %s
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; This test checks that LLVM can do basic stripping and reapplying of branches
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; to basic blocks.
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declare void @test_true()
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declare void @test_false()
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; !0 corresponds to a branch being taken, !1 to not being takne.
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!0 = metadata !{metadata !"branch_weights", i32 64, i32 4}
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!1 = metadata !{metadata !"branch_weights", i32 4, i32 64}
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define void @test_Bcc_fallthrough_taken(i32 %in) nounwind {
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; CHECK: test_Bcc_fallthrough_taken:
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%tst = icmp eq i32 %in, 42
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br i1 %tst, label %true, label %false, !prof !0
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; CHECK: cmp {{w[0-9]+}}, #42
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; CHECK: b.ne [[FALSE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_true
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; CHECK: [[FALSE]]:
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; CHECK: bl test_false
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_Bcc_fallthrough_nottaken(i32 %in) nounwind {
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; CHECK: test_Bcc_fallthrough_nottaken:
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%tst = icmp eq i32 %in, 42
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br i1 %tst, label %true, label %false, !prof !1
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; CHECK: cmp {{w[0-9]+}}, #42
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; CHECK: b.eq [[TRUE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_false
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; CHECK: [[TRUE]]:
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; CHECK: bl test_true
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_CBZ_fallthrough_taken(i32 %in) nounwind {
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; CHECK: test_CBZ_fallthrough_taken:
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%tst = icmp eq i32 %in, 0
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br i1 %tst, label %true, label %false, !prof !0
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; CHECK: cbnz {{w[0-9]+}}, [[FALSE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_true
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; CHECK: [[FALSE]]:
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; CHECK: bl test_false
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_CBZ_fallthrough_nottaken(i64 %in) nounwind {
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; CHECK: test_CBZ_fallthrough_nottaken:
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%tst = icmp eq i64 %in, 0
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br i1 %tst, label %true, label %false, !prof !1
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; CHECK: cbz {{x[0-9]+}}, [[TRUE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_false
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; CHECK: [[TRUE]]:
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; CHECK: bl test_true
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_CBNZ_fallthrough_taken(i32 %in) nounwind {
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; CHECK: test_CBNZ_fallthrough_taken:
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%tst = icmp ne i32 %in, 0
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br i1 %tst, label %true, label %false, !prof !0
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; CHECK: cbz {{w[0-9]+}}, [[FALSE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_true
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; CHECK: [[FALSE]]:
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; CHECK: bl test_false
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_CBNZ_fallthrough_nottaken(i64 %in) nounwind {
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; CHECK: test_CBNZ_fallthrough_nottaken:
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%tst = icmp ne i64 %in, 0
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br i1 %tst, label %true, label %false, !prof !1
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; CHECK: cbnz {{x[0-9]+}}, [[TRUE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_false
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; CHECK: [[TRUE]]:
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; CHECK: bl test_true
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_TBZ_fallthrough_taken(i32 %in) nounwind {
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; CHECK: test_TBZ_fallthrough_taken:
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%bit = and i32 %in, 32768
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%tst = icmp eq i32 %bit, 0
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br i1 %tst, label %true, label %false, !prof !0
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; CHECK: tbnz {{w[0-9]+}}, #15, [[FALSE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_true
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; CHECK: [[FALSE]]:
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; CHECK: bl test_false
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_TBZ_fallthrough_nottaken(i64 %in) nounwind {
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; CHECK: test_TBZ_fallthrough_nottaken:
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%bit = and i64 %in, 32768
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%tst = icmp eq i64 %bit, 0
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br i1 %tst, label %true, label %false, !prof !1
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; CHECK: tbz {{x[0-9]+}}, #15, [[TRUE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_false
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; CHECK: [[TRUE]]:
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; CHECK: bl test_true
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_TBNZ_fallthrough_taken(i32 %in) nounwind {
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; CHECK: test_TBNZ_fallthrough_taken:
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%bit = and i32 %in, 32768
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%tst = icmp ne i32 %bit, 0
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br i1 %tst, label %true, label %false, !prof !0
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; CHECK: tbz {{w[0-9]+}}, #15, [[FALSE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_true
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; CHECK: [[FALSE]]:
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; CHECK: bl test_false
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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define void @test_TBNZ_fallthrough_nottaken(i64 %in) nounwind {
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; CHECK: test_TBNZ_fallthrough_nottaken:
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%bit = and i64 %in, 32768
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%tst = icmp ne i64 %bit, 0
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br i1 %tst, label %true, label %false, !prof !1
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; CHECK: tbnz {{x[0-9]+}}, #15, [[TRUE:.LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: // BB#
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; CHECK-NEXT: bl test_false
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; CHECK: [[TRUE]]:
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; CHECK: bl test_true
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true:
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call void @test_true()
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ret void
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false:
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call void @test_false()
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ret void
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}
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