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[AArch64][FastISel] Handle CRC32 intrinsics
With a similar reason as D148023; some applications make heavy use of the CRC32 intrinsic (e.g., as part of a hash function) and therefore benefit from avoiding frequent SelectionDAG fallbacks. In our application, we get a 2% compile-time improvement. Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D148917
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; RUN: llc -mtriple=arm64-eabi -fast-isel -fast-isel-abort=3 -mattr=+crc -o - %s | FileCheck %s | ||
; RUN: llc -mtriple=arm64-eabi -fast-isel -fast-isel-abort=3 -mattr=+v8r -o - %s | FileCheck %s | ||
; RUN: llc -mtriple=arm64-eabi -fast-isel -fast-isel-abort=3 -mcpu=cortex-a53 -mattr=+crc -o - %s | FileCheck %s | ||
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; Note: tests are a copy of arm64-crc32.ll | ||
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define i32 @test_crc32b(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32b: | ||
; CHECK: crc32b w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32b(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32h(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32h: | ||
; CHECK: crc32h w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32h(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32w(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32w: | ||
; CHECK: crc32w w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32w(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32x(i32 %cur, i64 %next) { | ||
; CHECK-LABEL: test_crc32x: | ||
; CHECK: crc32x w0, w0, x1 | ||
%val = call i32 @llvm.aarch64.crc32x(i32 %cur, i64 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32cb(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32cb: | ||
; CHECK: crc32cb w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32cb(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32ch(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32ch: | ||
; CHECK: crc32ch w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32ch(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32cw(i32 %cur, i32 %next) { | ||
; CHECK-LABEL: test_crc32cw: | ||
; CHECK: crc32cw w0, w0, w1 | ||
%val = call i32 @llvm.aarch64.crc32cw(i32 %cur, i32 %next) | ||
ret i32 %val | ||
} | ||
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define i32 @test_crc32cx(i32 %cur, i64 %next) { | ||
; CHECK-LABEL: test_crc32cx: | ||
; CHECK: crc32cx w0, w0, x1 | ||
%val = call i32 @llvm.aarch64.crc32cx(i32 %cur, i64 %next) | ||
ret i32 %val | ||
} | ||
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declare i32 @llvm.aarch64.crc32b(i32, i32) | ||
declare i32 @llvm.aarch64.crc32h(i32, i32) | ||
declare i32 @llvm.aarch64.crc32w(i32, i32) | ||
declare i32 @llvm.aarch64.crc32x(i32, i64) | ||
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declare i32 @llvm.aarch64.crc32cb(i32, i32) | ||
declare i32 @llvm.aarch64.crc32ch(i32, i32) | ||
declare i32 @llvm.aarch64.crc32cw(i32, i32) | ||
declare i32 @llvm.aarch64.crc32cx(i32, i64) |