forked from OSchip/llvm-project
69 lines
2.4 KiB
LLVM
69 lines
2.4 KiB
LLVM
; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
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; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s
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; CHECK-LABEL: {{^}}select0:
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; i64 select should be split into two i32 selects, and we shouldn't need
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; to use a shfit to extract the hi dword of the input.
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; CHECK-NOT: s_lshr_b64
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; CHECK: v_cndmask
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; CHECK: v_cndmask
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define void @select0(i64 addrspace(1)* %out, i32 %cond, i64 %in) {
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entry:
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%0 = icmp ugt i32 %cond, 5
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%1 = select i1 %0, i64 0, i64 %in
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store i64 %1, i64 addrspace(1)* %out
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ret void
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}
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; CHECK-LABEL: {{^}}select_trunc_i64:
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; CHECK: v_cndmask_b32
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; CHECK-NOT: v_cndmask_b32
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define void @select_trunc_i64(i32 addrspace(1)* %out, i32 %cond, i64 %in) nounwind {
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%cmp = icmp ugt i32 %cond, 5
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%sel = select i1 %cmp, i64 0, i64 %in
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%trunc = trunc i64 %sel 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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; CHECK-LABEL: {{^}}select_trunc_i64_2:
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; CHECK: v_cndmask_b32
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; CHECK-NOT: v_cndmask_b32
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define void @select_trunc_i64_2(i32 addrspace(1)* %out, i32 %cond, i64 %a, i64 %b) nounwind {
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%cmp = icmp ugt i32 %cond, 5
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%sel = select i1 %cmp, i64 %a, i64 %b
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%trunc = trunc i64 %sel 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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; CHECK-LABEL: {{^}}v_select_trunc_i64_2:
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; CHECK: v_cndmask_b32
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; CHECK-NOT: v_cndmask_b32
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define void @v_select_trunc_i64_2(i32 addrspace(1)* %out, i32 %cond, i64 addrspace(1)* %aptr, i64 addrspace(1)* %bptr) nounwind {
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%cmp = icmp ugt i32 %cond, 5
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%a = load i64 addrspace(1)* %aptr, align 8
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%b = load i64 addrspace(1)* %bptr, align 8
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%sel = select i1 %cmp, i64 %a, i64 %b
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%trunc = trunc i64 %sel 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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; CHECK-LABEL: {{^}}v_select_i64_split_imm:
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; CHECK: s_mov_b32 [[SHI:s[0-9]+]], 63
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; CHECK: s_mov_b32 [[SLO:s[0-9]+]], 0
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; CHECK-DAG: v_mov_b32_e32 [[VHI:v[0-9]+]], [[SHI]]
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; CHECK-DAG: v_mov_b32_e32 [[VLO:v[0-9]+]], [[SLO]]
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; CHECK-DAG: v_cndmask_b32_e64 {{v[0-9]+}}, [[VLO]], {{v[0-9]+}}
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; CHECK-DAG: v_cndmask_b32_e64 {{v[0-9]+}}, [[VHI]], {{v[0-9]+}}
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; CHECK: s_endpgm
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define void @v_select_i64_split_imm(i64 addrspace(1)* %out, i32 %cond, i64 addrspace(1)* %aptr, i64 addrspace(1)* %bptr) nounwind {
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%cmp = icmp ugt i32 %cond, 5
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%a = load i64 addrspace(1)* %aptr, align 8
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%b = load i64 addrspace(1)* %bptr, align 8
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%sel = select i1 %cmp, i64 %a, i64 270582939648 ; 63 << 32
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store i64 %sel, i64 addrspace(1)* %out, align 8
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ret void
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}
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