derek.holloway
7502bf64a4
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54 lines
2.4 KiB
LLVM
54 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-- -mattr=+sse | FileCheck %s --check-prefix=X86-SSE
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; RUN: llc < %s -mtriple=i686-- -mattr=+avx | FileCheck %s --check-prefix=X86-SSE
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; RUN: llc < %s -mtriple=i686-- -mattr=+sse,+prfchw | FileCheck %s -check-prefix=X86-PRFCHWSSE
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; RUN: llc < %s -mtriple=i686-- -mattr=+prfchw | FileCheck %s -check-prefix=X86-PRFCHWSSE
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; RUN: llc < %s -mtriple=i686-- -mcpu=slm | FileCheck %s -check-prefix=X86-PRFCHWSSE
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; RUN: llc < %s -mtriple=i686-- -mcpu=btver2 | FileCheck %s -check-prefix=X86-PRFCHWSSE
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; RUN: llc < %s -mtriple=i686-- -mcpu=btver2 -mattr=-prfchw | FileCheck %s -check-prefix=X86-SSE
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; Rules:
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; sse provides prefetch0/1/2/nta
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; supporting prefetchw implicitly provides prefetcht0/1/2/nta as well, as we need something to fall back to for the non-write hint.
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define void @t(ptr %ptr) nounwind {
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; X86-SSE-LABEL: t:
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; X86-SSE: # %bb.0: # %entry
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; X86-SSE-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-SSE-NEXT: prefetcht2 (%eax)
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; X86-SSE-NEXT: prefetcht1 (%eax)
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; X86-SSE-NEXT: prefetcht0 (%eax)
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; X86-SSE-NEXT: prefetchnta (%eax)
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; X86-SSE-NEXT: prefetcht2 (%eax)
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; X86-SSE-NEXT: prefetcht1 (%eax)
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; X86-SSE-NEXT: prefetcht0 (%eax)
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; X86-SSE-NEXT: prefetchnta (%eax)
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; X86-SSE-NEXT: retl
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;
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; X86-PRFCHWSSE-LABEL: t:
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; X86-PRFCHWSSE: # %bb.0: # %entry
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; X86-PRFCHWSSE-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-PRFCHWSSE-NEXT: prefetcht2 (%eax)
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; X86-PRFCHWSSE-NEXT: prefetcht1 (%eax)
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; X86-PRFCHWSSE-NEXT: prefetcht0 (%eax)
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; X86-PRFCHWSSE-NEXT: prefetchnta (%eax)
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; X86-PRFCHWSSE-NEXT: prefetchw (%eax)
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; X86-PRFCHWSSE-NEXT: prefetchw (%eax)
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; X86-PRFCHWSSE-NEXT: prefetchw (%eax)
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; X86-PRFCHWSSE-NEXT: prefetchw (%eax)
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; X86-PRFCHWSSE-NEXT: retl
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entry:
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tail call void @llvm.prefetch( ptr %ptr, i32 0, i32 1, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 0, i32 2, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 0, i32 3, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 0, i32 0, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 1, i32 1, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 1, i32 2, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 1, i32 3, i32 1 )
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tail call void @llvm.prefetch( ptr %ptr, i32 1, i32 0, i32 1 )
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ret void
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}
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declare void @llvm.prefetch(ptr, i32, i32, i32) nounwind
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