forked from OSchip/llvm-project
56 lines
1.8 KiB
LLVM
56 lines
1.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs< %s | FileCheck -enable-var-scope -check-prefixes=GCN,VI %s
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; Make sure high constant 0 isn't pointlessly materialized
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; GCN-LABEL: {{^}}trunc_bitcast_i64_lshr_32_i16:
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; GCN: s_waitcnt
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; GCN-NEXT: v_mov_b32_e32 v0, v1
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; GCN-NEXT: s_setpc_b64
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define i16 @trunc_bitcast_i64_lshr_32_i16(i64 %bar) {
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%srl = lshr i64 %bar, 32
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%trunc = trunc i64 %srl to i16
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ret i16 %trunc
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}
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; GCN-LABEL: {{^}}trunc_bitcast_i64_lshr_32_i32:
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; GCN: s_waitcnt
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; GCN-NEXT: v_mov_b32_e32 v0, v1
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; GCN-NEXT: s_setpc_b64
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define i32 @trunc_bitcast_i64_lshr_32_i32(i64 %bar) {
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%srl = lshr i64 %bar, 32
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%trunc = trunc i64 %srl to i32
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ret i32 %trunc
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}
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; GCN-LABEL: {{^}}trunc_bitcast_v2i32_to_i16:
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; GCN: _load_dword
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; GCN-NOT: _load_dword
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; GCN-NOT: v_mov_b32
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; GCN: v_add_u32_e32 v0, vcc, 4, v0
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define i16 @trunc_bitcast_v2i32_to_i16(<2 x i32> %bar) {
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%load0 = load i32, i32 addrspace(1)* undef
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%load1 = load i32, i32 addrspace(1)* null
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%insert.0 = insertelement <2 x i32> undef, i32 %load0, i32 0
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%insert.1 = insertelement <2 x i32> %insert.0, i32 99, i32 1
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%bc = bitcast <2 x i32> %insert.1 to i64
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%trunc = trunc i64 %bc to i16
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%add = add i16 %trunc, 4
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ret i16 %add
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}
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; Make sure there's no crash if the source vector type is FP
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; GCN-LABEL: {{^}}trunc_bitcast_v2f32_to_i16:
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; GCN: _load_dword
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; GCN-NOT: _load_dword
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; GCN-NOT: v_mov_b32
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; GCN: v_add_u32_e32 v0, vcc, 4, v0
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define i16 @trunc_bitcast_v2f32_to_i16(<2 x float> %bar) {
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%load0 = load float, float addrspace(1)* undef
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%load1 = load float, float addrspace(1)* null
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%insert.0 = insertelement <2 x float> undef, float %load0, i32 0
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%insert.1 = insertelement <2 x float> %insert.0, float 4.0, i32 1
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%bc = bitcast <2 x float> %insert.1 to i64
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%trunc = trunc i64 %bc to i16
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%add = add i16 %trunc, 4
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ret i16 %add
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}
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