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https://github.com/RPCS3/llvm-mirror.git
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2f13163a84
This adds a second implementation of the AArch64 architecture to LLVM, accessible in parallel via the "arm64" triple. The plan over the coming weeks & months is to merge the two into a single backend, during which time thorough code review should naturally occur. Everything will be easier with the target in-tree though, hence this commit. llvm-svn: 205090
144 lines
3.8 KiB
LLVM
144 lines
3.8 KiB
LLVM
; RUN: llc < %s -mtriple=arm64-linux-gnu | FileCheck %s
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%0 = type { i64, i64 }
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define i128 @f0(i8* %p) nounwind readonly {
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; CHECK-LABEL: f0:
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; CHECK: ldxp {{x[0-9]+}}, {{x[0-9]+}}, [x0]
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entry:
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%ldrexd = tail call %0 @llvm.arm64.ldxp(i8* %p)
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%0 = extractvalue %0 %ldrexd, 1
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%1 = extractvalue %0 %ldrexd, 0
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%2 = zext i64 %0 to i128
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%3 = zext i64 %1 to i128
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%shl = shl nuw i128 %2, 64
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%4 = or i128 %shl, %3
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ret i128 %4
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}
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define i32 @f1(i8* %ptr, i128 %val) nounwind {
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; CHECK-LABEL: f1:
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; CHECK: stxp {{w[0-9]+}}, {{x[0-9]+}}, {{x[0-9]+}}, [x0]
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entry:
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%tmp4 = trunc i128 %val to i64
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%tmp6 = lshr i128 %val, 64
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%tmp7 = trunc i128 %tmp6 to i64
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%strexd = tail call i32 @llvm.arm64.stxp(i64 %tmp4, i64 %tmp7, i8* %ptr)
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ret i32 %strexd
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}
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declare %0 @llvm.arm64.ldxp(i8*) nounwind
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declare i32 @llvm.arm64.stxp(i64, i64, i8*) nounwind
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@var = global i64 0, align 8
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define void @test_load_i8(i8* %addr) {
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; CHECK-LABEL: test_load_i8:
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; CHECK: ldxrb w[[LOADVAL:[0-9]+]], [x0]
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; CHECK-NOT: uxtb
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; CHECK-NOT: and
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; CHECK: str x[[LOADVAL]], [{{x[0-9]+}}, :lo12:var]
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%val = call i64 @llvm.arm64.ldxr.p0i8(i8* %addr)
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%shortval = trunc i64 %val to i8
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%extval = zext i8 %shortval to i64
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store i64 %extval, i64* @var, align 8
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ret void
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}
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define void @test_load_i16(i16* %addr) {
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; CHECK-LABEL: test_load_i16:
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; CHECK: ldxrh w[[LOADVAL:[0-9]+]], [x0]
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; CHECK-NOT: uxth
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; CHECK-NOT: and
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; CHECK: str x[[LOADVAL]], [{{x[0-9]+}}, :lo12:var]
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%val = call i64 @llvm.arm64.ldxr.p0i16(i16* %addr)
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%shortval = trunc i64 %val to i16
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%extval = zext i16 %shortval to i64
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store i64 %extval, i64* @var, align 8
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ret void
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}
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define void @test_load_i32(i32* %addr) {
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; CHECK-LABEL: test_load_i32:
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; CHECK: ldxr w[[LOADVAL:[0-9]+]], [x0]
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; CHECK-NOT: uxtw
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; CHECK-NOT: and
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; CHECK: str x[[LOADVAL]], [{{x[0-9]+}}, :lo12:var]
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%val = call i64 @llvm.arm64.ldxr.p0i32(i32* %addr)
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%shortval = trunc i64 %val to i32
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%extval = zext i32 %shortval to i64
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store i64 %extval, i64* @var, align 8
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ret void
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}
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define void @test_load_i64(i64* %addr) {
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; CHECK-LABEL: test_load_i64:
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; CHECK: ldxr x[[LOADVAL:[0-9]+]], [x0]
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; CHECK: str x[[LOADVAL]], [{{x[0-9]+}}, :lo12:var]
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%val = call i64 @llvm.arm64.ldxr.p0i64(i64* %addr)
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store i64 %val, i64* @var, align 8
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ret void
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}
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declare i64 @llvm.arm64.ldxr.p0i8(i8*) nounwind
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declare i64 @llvm.arm64.ldxr.p0i16(i16*) nounwind
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declare i64 @llvm.arm64.ldxr.p0i32(i32*) nounwind
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declare i64 @llvm.arm64.ldxr.p0i64(i64*) nounwind
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define i32 @test_store_i8(i32, i8 %val, i8* %addr) {
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; CHECK-LABEL: test_store_i8:
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; CHECK-NOT: uxtb
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; CHECK-NOT: and
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; CHECK: stxrb w0, w1, [x2]
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%extval = zext i8 %val to i64
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%res = call i32 @llvm.arm64.stxr.p0i8(i64 %extval, i8* %addr)
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ret i32 %res
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}
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define i32 @test_store_i16(i32, i16 %val, i16* %addr) {
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; CHECK-LABEL: test_store_i16:
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; CHECK-NOT: uxth
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; CHECK-NOT: and
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; CHECK: stxrh w0, w1, [x2]
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%extval = zext i16 %val to i64
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%res = call i32 @llvm.arm64.stxr.p0i16(i64 %extval, i16* %addr)
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ret i32 %res
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}
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define i32 @test_store_i32(i32, i32 %val, i32* %addr) {
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; CHECK-LABEL: test_store_i32:
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; CHECK-NOT: uxtw
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; CHECK-NOT: and
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; CHECK: stxr w0, w1, [x2]
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%extval = zext i32 %val to i64
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%res = call i32 @llvm.arm64.stxr.p0i32(i64 %extval, i32* %addr)
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ret i32 %res
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}
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define i32 @test_store_i64(i32, i64 %val, i64* %addr) {
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; CHECK-LABEL: test_store_i64:
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; CHECK: stxr w0, x1, [x2]
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%res = call i32 @llvm.arm64.stxr.p0i64(i64 %val, i64* %addr)
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ret i32 %res
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}
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declare i32 @llvm.arm64.stxr.p0i8(i64, i8*) nounwind
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declare i32 @llvm.arm64.stxr.p0i16(i64, i16*) nounwind
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declare i32 @llvm.arm64.stxr.p0i32(i64, i32*) nounwind
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declare i32 @llvm.arm64.stxr.p0i64(i64, i64*) nounwind
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; CHECK: test_clear:
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; CHECK: clrex
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define void @test_clear() {
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call void @llvm.arm64.clrex()
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ret void
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}
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declare void @llvm.arm64.clrex() nounwind
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