mirror of
https://github.com/c64scene-ar/llvm-6502.git
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9105f66d6f
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209576 91177308-0d34-0410-b5e6-96231b3b80d8
199 lines
5.8 KiB
LLVM
199 lines
5.8 KiB
LLVM
; RUN: llc -mtriple=arm64-none-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ARM64
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; First, a simple example from Clang. The registers could plausibly be
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; different, but probably won't be.
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%struct.foo = type { i8, [2 x i8], i8 }
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define [1 x i64] @from_clang([1 x i64] %f.coerce, i32 %n) nounwind readnone {
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; CHECK-LABEL: from_clang:
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; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #3, #4
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entry:
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%f.coerce.fca.0.extract = extractvalue [1 x i64] %f.coerce, 0
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%tmp.sroa.0.0.extract.trunc = trunc i64 %f.coerce.fca.0.extract to i32
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%bf.value = shl i32 %n, 3
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%0 = and i32 %bf.value, 120
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%f.sroa.0.0.insert.ext.masked = and i32 %tmp.sroa.0.0.extract.trunc, 135
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%1 = or i32 %f.sroa.0.0.insert.ext.masked, %0
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%f.sroa.0.0.extract.trunc = zext i32 %1 to i64
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%tmp1.sroa.1.1.insert.insert = and i64 %f.coerce.fca.0.extract, 4294967040
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%tmp1.sroa.0.0.insert.insert = or i64 %f.sroa.0.0.extract.trunc, %tmp1.sroa.1.1.insert.insert
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%.fca.0.insert = insertvalue [1 x i64] undef, i64 %tmp1.sroa.0.0.insert.insert, 0
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ret [1 x i64] %.fca.0.insert
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}
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define void @test_whole32(i32* %existing, i32* %new) {
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; CHECK-LABEL: test_whole32:
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; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #26, #5
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%oldval = load volatile i32* %existing
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%oldval_keep = and i32 %oldval, 2214592511 ; =0x83ffffff
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%newval = load volatile i32* %new
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%newval_shifted = shl i32 %newval, 26
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%newval_masked = and i32 %newval_shifted, 2080374784 ; = 0x7c000000
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%combined = or i32 %oldval_keep, %newval_masked
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store volatile i32 %combined, i32* %existing
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ret void
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}
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define void @test_whole64(i64* %existing, i64* %new) {
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; CHECK-LABEL: test_whole64:
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; CHECK: bfi {{x[0-9]+}}, {{x[0-9]+}}, #26, #14
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; CHECK-NOT: and
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; CHECK: ret
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%oldval = load volatile i64* %existing
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%oldval_keep = and i64 %oldval, 18446742974265032703 ; = 0xffffff0003ffffffL
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%newval = load volatile i64* %new
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%newval_shifted = shl i64 %newval, 26
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%newval_masked = and i64 %newval_shifted, 1099444518912 ; = 0xfffc000000
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%combined = or i64 %oldval_keep, %newval_masked
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store volatile i64 %combined, i64* %existing
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ret void
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}
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define void @test_whole32_from64(i64* %existing, i64* %new) {
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; CHECK-LABEL: test_whole32_from64:
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; CHECK-ARM64: bfxil {{x[0-9]+}}, {{x[0-9]+}}, #0, #16
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; CHECK: ret
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%oldval = load volatile i64* %existing
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%oldval_keep = and i64 %oldval, 4294901760 ; = 0xffff0000
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%newval = load volatile i64* %new
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%newval_masked = and i64 %newval, 65535 ; = 0xffff
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%combined = or i64 %oldval_keep, %newval_masked
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store volatile i64 %combined, i64* %existing
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ret void
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}
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define void @test_32bit_masked(i32 *%existing, i32 *%new) {
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; CHECK-LABEL: test_32bit_masked:
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; CHECK-ARM64: and
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; CHECK: bfi [[INSERT:w[0-9]+]], {{w[0-9]+}}, #3, #4
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%oldval = load volatile i32* %existing
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%oldval_keep = and i32 %oldval, 135 ; = 0x87
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%newval = load volatile i32* %new
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%newval_shifted = shl i32 %newval, 3
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%newval_masked = and i32 %newval_shifted, 120 ; = 0x78
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%combined = or i32 %oldval_keep, %newval_masked
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store volatile i32 %combined, i32* %existing
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ret void
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}
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define void @test_64bit_masked(i64 *%existing, i64 *%new) {
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; CHECK-LABEL: test_64bit_masked:
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; CHECK-ARM64: and
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; CHECK: bfi [[INSERT:x[0-9]+]], {{x[0-9]+}}, #40, #8
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%oldval = load volatile i64* %existing
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%oldval_keep = and i64 %oldval, 1095216660480 ; = 0xff_0000_0000
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%newval = load volatile i64* %new
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%newval_shifted = shl i64 %newval, 40
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%newval_masked = and i64 %newval_shifted, 280375465082880 ; = 0xff00_0000_0000
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%combined = or i64 %newval_masked, %oldval_keep
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store volatile i64 %combined, i64* %existing
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ret void
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}
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; Mask is too complicated for literal ANDwwi, make sure other avenues are tried.
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define void @test_32bit_complexmask(i32 *%existing, i32 *%new) {
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; CHECK-LABEL: test_32bit_complexmask:
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; CHECK-ARM64: and
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; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #3, #4
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%oldval = load volatile i32* %existing
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%oldval_keep = and i32 %oldval, 647 ; = 0x287
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%newval = load volatile i32* %new
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%newval_shifted = shl i32 %newval, 3
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%newval_masked = and i32 %newval_shifted, 120 ; = 0x278
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%combined = or i32 %oldval_keep, %newval_masked
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store volatile i32 %combined, i32* %existing
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ret void
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}
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; Neither mask is is a contiguous set of 1s. BFI can't be used
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define void @test_32bit_badmask(i32 *%existing, i32 *%new) {
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; CHECK-LABEL: test_32bit_badmask:
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; CHECK-NOT: bfi
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; CHECK-NOT: bfm
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; CHECK: ret
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%oldval = load volatile i32* %existing
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%oldval_keep = and i32 %oldval, 135 ; = 0x87
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%newval = load volatile i32* %new
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%newval_shifted = shl i32 %newval, 3
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%newval_masked = and i32 %newval_shifted, 632 ; = 0x278
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%combined = or i32 %oldval_keep, %newval_masked
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store volatile i32 %combined, i32* %existing
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ret void
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}
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; Ditto
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define void @test_64bit_badmask(i64 *%existing, i64 *%new) {
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; CHECK-LABEL: test_64bit_badmask:
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; CHECK-NOT: bfi
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; CHECK-NOT: bfm
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; CHECK: ret
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%oldval = load volatile i64* %existing
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%oldval_keep = and i64 %oldval, 135 ; = 0x87
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%newval = load volatile i64* %new
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%newval_shifted = shl i64 %newval, 3
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%newval_masked = and i64 %newval_shifted, 664 ; = 0x278
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%combined = or i64 %oldval_keep, %newval_masked
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store volatile i64 %combined, i64* %existing
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ret void
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}
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; Bitfield insert where there's a left-over shr needed at the beginning
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; (e.g. result of str.bf1 = str.bf2)
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define void @test_32bit_with_shr(i32* %existing, i32* %new) {
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; CHECK-LABEL: test_32bit_with_shr:
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%oldval = load volatile i32* %existing
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%oldval_keep = and i32 %oldval, 2214592511 ; =0x83ffffff
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%newval = load i32* %new
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%newval_shifted = shl i32 %newval, 12
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%newval_masked = and i32 %newval_shifted, 2080374784 ; = 0x7c000000
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%combined = or i32 %oldval_keep, %newval_masked
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store volatile i32 %combined, i32* %existing
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; CHECK: lsr [[BIT:w[0-9]+]], {{w[0-9]+}}, #14
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; CHECK: bfi {{w[0-9]+}}, [[BIT]], #26, #5
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ret void
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}
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