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https://github.com/c64scene-ar/llvm-6502.git
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953c681473
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239657 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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declare i32 @llvm.r600.read.tidig.x() readnone
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; This is broken because the low half of the 64-bit add remains on the
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; SALU, but the upper half does not. The addc expects the carry bit
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; set in vcc, which is undefined since the low scalar half add sets
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; scc instead.
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; FUNC-LABEL: {{^}}imp_def_vcc_split_i64_add_0:
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; SI: v_add_i32
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; SI: v_addc_u32
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define void @imp_def_vcc_split_i64_add_0(i64 addrspace(1)* %out, i32 %val) {
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%vec.0 = insertelement <2 x i32> undef, i32 %val, i32 0
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%vec.1 = insertelement <2 x i32> %vec.0, i32 999999, i32 1
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%bc = bitcast <2 x i32> %vec.1 to i64
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%add = add i64 %bc, 399
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store i64 %add, i64 addrspace(1)* %out, align 8
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ret void
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}
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; FUNC-LABEL: {{^}}imp_def_vcc_split_i64_add_1:
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; SI: v_add_i32
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; SI: v_addc_u32
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define void @imp_def_vcc_split_i64_add_1(i64 addrspace(1)* %out, i32 %val0, i64 %val1) {
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%vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
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%vec.1 = insertelement <2 x i32> %vec.0, i32 99999, i32 1
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%bc = bitcast <2 x i32> %vec.1 to i64
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%add = add i64 %bc, %val1
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store i64 %add, i64 addrspace(1)* %out, align 8
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ret void
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}
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; Doesn't use constants
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; FUNC-LABEL @imp_def_vcc_split_i64_add_2
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; SI: v_add_i32
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; SI: v_addc_u32
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define void @imp_def_vcc_split_i64_add_2(i64 addrspace(1)* %out, i32 addrspace(1)* %in, i32 %val0, i64 %val1) {
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%tid = call i32 @llvm.r600.read.tidig.x() readnone
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%gep = getelementptr i32, i32 addrspace(1)* %in, i32 %tid
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%load = load i32, i32 addrspace(1)* %gep
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%vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
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%vec.1 = insertelement <2 x i32> %vec.0, i32 %load, i32 1
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%bc = bitcast <2 x i32> %vec.1 to i64
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%add = add i64 %bc, %val1
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store i64 %add, i64 addrspace(1)* %out, align 8
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ret void
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}
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