7a84624079
Surprisingly these were getting legalized to something zero initialized. This fixes an infinite loop when combining some vector types. Also fixes zero initializing some undef values. SimplifyDemandedVectorElts / SimplifyDemandedBits are not checking for the legality of the output undefs they are replacing unused operations with. This resulted in turning vectors into undefs that were later re-legalized back into zero vectors.
32 lines
1.4 KiB
LLVM
32 lines
1.4 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=gfx908 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; Check that we do not use AGPRs for v32i32 type
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; GCN-LABEL: {{^}}test_v1024:
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; GCN-NOT: v_accvgpr
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; GCN-COUNT-32: v_mov_b32_e32
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; GCN-NOT: v_accvgpr
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define amdgpu_kernel void @test_v1024() {
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entry:
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%alloca = alloca <32 x i32>, align 16, addrspace(5)
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%cast = bitcast <32 x i32> addrspace(5)* %alloca to i8 addrspace(5)*
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call void @llvm.memset.p5i8.i32(i8 addrspace(5)* %cast, i8 0, i32 128, i1 false)
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br i1 undef, label %if.then.i.i, label %if.else.i
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if.then.i.i: ; preds = %entry
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call void @llvm.memcpy.p5i8.p5i8.i64(i8 addrspace(5)* align 16 %cast, i8 addrspace(5)* align 4 undef, i64 128, i1 false)
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br label %if.then.i62.i
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if.else.i: ; preds = %entry
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br label %if.then.i62.i
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if.then.i62.i: ; preds = %if.else.i, %if.then.i.i
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call void @llvm.memcpy.p1i8.p5i8.i64(i8 addrspace(1)* align 4 undef, i8 addrspace(5)* align 16 %cast, i64 128, i1 false)
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ret void
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}
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declare void @llvm.memset.p5i8.i32(i8 addrspace(5)* nocapture readonly, i8, i32, i1 immarg)
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declare void @llvm.memcpy.p5i8.p5i8.i64(i8 addrspace(5)* nocapture writeonly, i8 addrspace(5)* nocapture readonly, i64, i1 immarg)
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declare void @llvm.memcpy.p1i8.p5i8.i64(i8 addrspace(1)* nocapture writeonly, i8 addrspace(5)* nocapture readonly, i64, i1 immarg)
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