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https://github.com/c64scene-ar/llvm-6502.git
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37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
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; RUN: llc -verify-machineinstrs -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI %s
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; 64-bit select was originally lowered with a build_pair, and this
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; could be simplified to 1 cndmask instead of 2, but that broken when
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; it started being implemented with a v2i32 build_vector and
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; bitcasting.
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define void @trunc_select_i64(i32 addrspace(1)* %out, i64 %a, i64 %b, i32 %c) {
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%cmp = icmp eq i32 %c, 0
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%select = select i1 %cmp, i64 %a, i64 %b
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%trunc = trunc i64 %select to i32
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store i32 %trunc, i32 addrspace(1)* %out, align 4
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ret void
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}
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; SI-LABEL: @trunc_load_alloca_i64:
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; SI: V_MOVRELS_B32
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; SI-NOT: V_MOVRELS_B32
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; SI: S_ENDPGM
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define void @trunc_load_alloca_i64(i64 addrspace(1)* %out, i32 %a, i32 %b) {
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%idx = add i32 %a, %b
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%alloca = alloca i64, i32 4
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%gep0 = getelementptr i64* %alloca, i64 0
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%gep1 = getelementptr i64* %alloca, i64 1
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%gep2 = getelementptr i64* %alloca, i64 2
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%gep3 = getelementptr i64* %alloca, i64 3
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store i64 24, i64* %gep0, align 8
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store i64 9334, i64* %gep1, align 8
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store i64 3935, i64* %gep2, align 8
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store i64 9342, i64* %gep3, align 8
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%gep = getelementptr i64* %alloca, i32 %idx
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%load = load i64* %gep, align 8
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%mask = and i64 %load, 4294967296
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%add = add i64 %mask, -1
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store i64 %add, i64 addrspace(1)* %out, align 4
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ret void
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}
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