derek.holloway
7502bf64a4
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88 lines
3.3 KiB
LLVM
88 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -mattr=+neon | FileCheck %s
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; Check that pmull2 instruction is used for vmull_high_p8 intrinsic
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; even if shufflevector instructions are located in different basic blocks,
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; which can happen when vmull_high_p8 is used inside a loop body.
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;
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define <8 x i16> @test_pmull2_sink(<16 x i8> %a, <16 x i8> %b, <8 x i16> %c, i1 %t) {
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; CHECK-LABEL: test_pmull2_sink:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: tbz w0, #0, .LBB0_2
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; CHECK-NEXT: // %bb.1: // %if.then
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; CHECK-NEXT: pmull2 v0.8h, v0.16b, v1.16b
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; CHECK-NEXT: ret
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; CHECK-NEXT: .LBB0_2: // %cleanup
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; CHECK-NEXT: mov v0.16b, v2.16b
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; CHECK-NEXT: ret
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entry:
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%0 = shufflevector <16 x i8> %a, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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br i1 %t, label %if.then, label %cleanup
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if.then:
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%1 = shufflevector <16 x i8> %b, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%res = tail call <8 x i16> @llvm.aarch64.neon.pmull.v8i16(<8 x i8> %0, <8 x i8> %1)
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br label %cleanup
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cleanup:
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%retval = phi <8 x i16> [ %res, %if.then ], [ %c, %entry ]
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ret <8 x i16> %retval
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}
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define <8 x i16> @test_pmull2_sink2(<16 x i8> %a, <16 x i8> %b, <8 x i16> %c, i1 %t) {
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; CHECK-LABEL: test_pmull2_sink2:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: tbz w0, #0, .LBB1_2
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; CHECK-NEXT: // %bb.1: // %if.then
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; CHECK-NEXT: pmull2 v0.8h, v0.16b, v0.16b
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; CHECK-NEXT: ret
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; CHECK-NEXT: .LBB1_2: // %cleanup
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; CHECK-NEXT: mov v0.16b, v2.16b
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; CHECK-NEXT: ret
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entry:
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%0 = shufflevector <16 x i8> %a, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%1 = shufflevector <16 x i8> %a, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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br i1 %t, label %if.then, label %cleanup
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if.then:
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%res = tail call <8 x i16> @llvm.aarch64.neon.pmull.v8i16(<8 x i8> %0, <8 x i8> %1)
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br label %cleanup
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cleanup:
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%retval = phi <8 x i16> [ %res, %if.then ], [ %c, %entry ]
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ret <8 x i16> %retval
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}
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define <8 x i16> @test_pmull2_sink3(<16 x i8> %a, <16 x i8> %b, <8 x i16> %c, i1 %t, i1 %t2) {
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; CHECK-LABEL: test_pmull2_sink3:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: tbz w0, #0, .LBB2_2
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; CHECK-NEXT: // %bb.1: // %if.then
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; CHECK-NEXT: tbz w1, #0, .LBB2_3
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; CHECK-NEXT: .LBB2_2: // %if.then.2
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; CHECK-NEXT: pmull2 v0.8h, v0.16b, v1.16b
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; CHECK-NEXT: ret
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; CHECK-NEXT: .LBB2_3: // %cleanup
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; CHECK-NEXT: pmull2 v0.8h, v0.16b, v0.16b
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; CHECK-NEXT: ret
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entry:
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%0 = shufflevector <16 x i8> %a, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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br i1 %t, label %if.then, label %if.then.2
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if.then:
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%res = tail call <8 x i16> @llvm.aarch64.neon.pmull.v8i16(<8 x i8> %0, <8 x i8> %0)
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br i1 %t2, label %if.then.2, label %cleanup
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if.then.2:
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%1 = shufflevector <16 x i8> %b, <16 x i8> poison, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%res2 = tail call <8 x i16> @llvm.aarch64.neon.pmull.v8i16(<8 x i8> %0, <8 x i8> %1)
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br label %cleanup
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cleanup:
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%retval = phi <8 x i16> [ %res2, %if.then.2 ], [ %res, %if.then ]
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ret <8 x i16> %retval
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}
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declare <8 x i16> @llvm.aarch64.neon.pmull.v8i16(<8 x i8>, <8 x i8>)
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