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llvm-6502/test/CodeGen/AArch64/bitfield-insert.ll
Tim Northover 29f94c7201 AArch64/ARM64: move ARM64 into AArch64's place
This commit starts with a "git mv ARM64 AArch64" and continues out
from there, renaming the C++ classes, intrinsics, and other
target-local objects for consistency.

"ARM64" test directories are also moved, and tests that began their
life in ARM64 use an arm64 triple, those from AArch64 use an aarch64
triple. Both should be equivalent though.

This finishes the AArch64 merge, and everyone should feel free to
continue committing as normal now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209577 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-24 12:50:23 +00:00

199 lines
5.7 KiB
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s --check-prefix=CHECK
; First, a simple example from Clang. The registers could plausibly be
; different, but probably won't be.
%struct.foo = type { i8, [2 x i8], i8 }
define [1 x i64] @from_clang([1 x i64] %f.coerce, i32 %n) nounwind readnone {
; CHECK-LABEL: from_clang:
; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #3, #4
entry:
%f.coerce.fca.0.extract = extractvalue [1 x i64] %f.coerce, 0
%tmp.sroa.0.0.extract.trunc = trunc i64 %f.coerce.fca.0.extract to i32
%bf.value = shl i32 %n, 3
%0 = and i32 %bf.value, 120
%f.sroa.0.0.insert.ext.masked = and i32 %tmp.sroa.0.0.extract.trunc, 135
%1 = or i32 %f.sroa.0.0.insert.ext.masked, %0
%f.sroa.0.0.extract.trunc = zext i32 %1 to i64
%tmp1.sroa.1.1.insert.insert = and i64 %f.coerce.fca.0.extract, 4294967040
%tmp1.sroa.0.0.insert.insert = or i64 %f.sroa.0.0.extract.trunc, %tmp1.sroa.1.1.insert.insert
%.fca.0.insert = insertvalue [1 x i64] undef, i64 %tmp1.sroa.0.0.insert.insert, 0
ret [1 x i64] %.fca.0.insert
}
define void @test_whole32(i32* %existing, i32* %new) {
; CHECK-LABEL: test_whole32:
; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #26, #5
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 2214592511 ; =0x83ffffff
%newval = load volatile i32* %new
%newval_shifted = shl i32 %newval, 26
%newval_masked = and i32 %newval_shifted, 2080374784 ; = 0x7c000000
%combined = or i32 %oldval_keep, %newval_masked
store volatile i32 %combined, i32* %existing
ret void
}
define void @test_whole64(i64* %existing, i64* %new) {
; CHECK-LABEL: test_whole64:
; CHECK: bfi {{x[0-9]+}}, {{x[0-9]+}}, #26, #14
; CHECK-NOT: and
; CHECK: ret
%oldval = load volatile i64* %existing
%oldval_keep = and i64 %oldval, 18446742974265032703 ; = 0xffffff0003ffffffL
%newval = load volatile i64* %new
%newval_shifted = shl i64 %newval, 26
%newval_masked = and i64 %newval_shifted, 1099444518912 ; = 0xfffc000000
%combined = or i64 %oldval_keep, %newval_masked
store volatile i64 %combined, i64* %existing
ret void
}
define void @test_whole32_from64(i64* %existing, i64* %new) {
; CHECK-LABEL: test_whole32_from64:
; CHECK: bfxil {{x[0-9]+}}, {{x[0-9]+}}, #0, #16
; CHECK: ret
%oldval = load volatile i64* %existing
%oldval_keep = and i64 %oldval, 4294901760 ; = 0xffff0000
%newval = load volatile i64* %new
%newval_masked = and i64 %newval, 65535 ; = 0xffff
%combined = or i64 %oldval_keep, %newval_masked
store volatile i64 %combined, i64* %existing
ret void
}
define void @test_32bit_masked(i32 *%existing, i32 *%new) {
; CHECK-LABEL: test_32bit_masked:
; CHECK: and
; CHECK: bfi [[INSERT:w[0-9]+]], {{w[0-9]+}}, #3, #4
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 135 ; = 0x87
%newval = load volatile i32* %new
%newval_shifted = shl i32 %newval, 3
%newval_masked = and i32 %newval_shifted, 120 ; = 0x78
%combined = or i32 %oldval_keep, %newval_masked
store volatile i32 %combined, i32* %existing
ret void
}
define void @test_64bit_masked(i64 *%existing, i64 *%new) {
; CHECK-LABEL: test_64bit_masked:
; CHECK: and
; CHECK: bfi [[INSERT:x[0-9]+]], {{x[0-9]+}}, #40, #8
%oldval = load volatile i64* %existing
%oldval_keep = and i64 %oldval, 1095216660480 ; = 0xff_0000_0000
%newval = load volatile i64* %new
%newval_shifted = shl i64 %newval, 40
%newval_masked = and i64 %newval_shifted, 280375465082880 ; = 0xff00_0000_0000
%combined = or i64 %newval_masked, %oldval_keep
store volatile i64 %combined, i64* %existing
ret void
}
; Mask is too complicated for literal ANDwwi, make sure other avenues are tried.
define void @test_32bit_complexmask(i32 *%existing, i32 *%new) {
; CHECK-LABEL: test_32bit_complexmask:
; CHECK: and
; CHECK: bfi {{w[0-9]+}}, {{w[0-9]+}}, #3, #4
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 647 ; = 0x287
%newval = load volatile i32* %new
%newval_shifted = shl i32 %newval, 3
%newval_masked = and i32 %newval_shifted, 120 ; = 0x278
%combined = or i32 %oldval_keep, %newval_masked
store volatile i32 %combined, i32* %existing
ret void
}
; Neither mask is is a contiguous set of 1s. BFI can't be used
define void @test_32bit_badmask(i32 *%existing, i32 *%new) {
; CHECK-LABEL: test_32bit_badmask:
; CHECK-NOT: bfi
; CHECK-NOT: bfm
; CHECK: ret
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 135 ; = 0x87
%newval = load volatile i32* %new
%newval_shifted = shl i32 %newval, 3
%newval_masked = and i32 %newval_shifted, 632 ; = 0x278
%combined = or i32 %oldval_keep, %newval_masked
store volatile i32 %combined, i32* %existing
ret void
}
; Ditto
define void @test_64bit_badmask(i64 *%existing, i64 *%new) {
; CHECK-LABEL: test_64bit_badmask:
; CHECK-NOT: bfi
; CHECK-NOT: bfm
; CHECK: ret
%oldval = load volatile i64* %existing
%oldval_keep = and i64 %oldval, 135 ; = 0x87
%newval = load volatile i64* %new
%newval_shifted = shl i64 %newval, 3
%newval_masked = and i64 %newval_shifted, 664 ; = 0x278
%combined = or i64 %oldval_keep, %newval_masked
store volatile i64 %combined, i64* %existing
ret void
}
; Bitfield insert where there's a left-over shr needed at the beginning
; (e.g. result of str.bf1 = str.bf2)
define void @test_32bit_with_shr(i32* %existing, i32* %new) {
; CHECK-LABEL: test_32bit_with_shr:
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 2214592511 ; =0x83ffffff
%newval = load i32* %new
%newval_shifted = shl i32 %newval, 12
%newval_masked = and i32 %newval_shifted, 2080374784 ; = 0x7c000000
%combined = or i32 %oldval_keep, %newval_masked
store volatile i32 %combined, i32* %existing
; CHECK: lsr [[BIT:w[0-9]+]], {{w[0-9]+}}, #14
; CHECK: bfi {{w[0-9]+}}, [[BIT]], #26, #5
ret void
}