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https://github.com/c64scene-ar/llvm-6502.git
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b52bf6a3b3
All shift operations will be selected as SALU instructions and then if necessary lowered to VALU instructions in the SIFixSGPRCopies pass. This allows us to do more operations on the SALU which will improve performance and is also required for implementing private memory using indirect addressing, since the private memory pointers must stay in the scalar registers. This patch includes some fixes from Matt Arsenault. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194625 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
1008 B
LLVM
31 lines
1008 B
LLVM
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI %s
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; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck -check-prefix=EG %s
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define void @trunc_i64_to_i32_store(i32 addrspace(1)* %out, i64 %in) {
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; SI-LABEL: @trunc_i64_to_i32_store
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; SI: S_LOAD_DWORD s0, s[0:1], 11
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; SI: V_MOV_B32_e32 v0, s0
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; SI: BUFFER_STORE_DWORD v0
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; EG-LABEL: @trunc_i64_to_i32_store
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; EG: MEM_RAT_CACHELESS STORE_RAW T0.X, T1.X, 1
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; EG: LSHR
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; EG-NEXT: 2(
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%result = trunc i64 %in to i32 store i32 %result, i32 addrspace(1)* %out, align 4
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ret void
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}
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; SI-LABEL: @trunc_shl_i64:
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; SI: S_LOAD_DWORDX2
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; SI: S_LOAD_DWORDX2 [[SREG:s\[[0-9]+:[0-9]+\]]]
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; SI: S_LSHL_B64 s{{\[}}[[LO_SREG:[0-9]+]]:{{[0-9]+\]}}, [[SREG]], 2
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; SI: MOV_B32_e32 v[[LO_VREG:[0-9]+]], s[[LO_SREG]]
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; SI: BUFFER_STORE_DWORD v[[LO_VREG]],
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define void @trunc_shl_i64(i32 addrspace(1)* %out, i64 %a) {
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%b = shl i64 %a, 2
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%result = trunc i64 %b to i32
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store i32 %result, i32 addrspace(1)* %out, align 4
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ret void
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}
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