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https://github.com/c64scene-ar/llvm-6502.git
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59a5e979b5
This enables very common cases to switch to the smaller encoding. All of the standard LLVM canonicalizations of comparisons are the opposite of what we want. Compares with constants are moved to the RHS, but the first operand can be an inline immediate, literal constant, or SGPR using the 32-bit VOPC encoding. There are additional bad canonicalizations that should also be fixed, such as canonicalizing ge x, k to gt x, (k + 1) if this makes k no longer an inline immediate value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232988 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.3 KiB
LLVM
75 lines
2.3 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=SI < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; FUNC-LABEL: {{^}}round_f64:
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; SI: s_endpgm
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define void @round_f64(double addrspace(1)* %out, double %x) #0 {
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%result = call double @llvm.round.f64(double %x) #1
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store double %result, double addrspace(1)* %out
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ret void
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}
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; This is a pretty large function, so just test a few of the
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; instructions that are necessary.
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; FUNC-LABEL: {{^}}v_round_f64:
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; SI: buffer_load_dwordx2
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; SI: v_bfe_u32 [[EXP:v[0-9]+]], v{{[0-9]+}}, 20, 11
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; SI-DAG: v_not_b32_e32
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; SI-DAG: v_not_b32_e32
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; SI-DAG: v_cmp_eq_i32
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; SI-DAG: s_mov_b32 [[BFIMASK:s[0-9]+]], 0x7fffffff
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; SI-DAG: v_cmp_gt_i32_e64
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; SI-DAG: v_bfi_b32 [[COPYSIGN:v[0-9]+]], [[BFIMASK]]
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; SI-DAG: v_cmp_gt_i32_e64
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; SI: buffer_store_dwordx2
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; SI: s_endpgm
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define void @v_round_f64(double addrspace(1)* %out, double addrspace(1)* %in) #0 {
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%tid = call i32 @llvm.r600.read.tidig.x() #1
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%gep = getelementptr double, double addrspace(1)* %in, i32 %tid
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%out.gep = getelementptr double, double addrspace(1)* %out, i32 %tid
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%x = load double, double addrspace(1)* %gep
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%result = call double @llvm.round.f64(double %x) #1
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store double %result, double addrspace(1)* %out.gep
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ret void
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}
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; FUNC-LABEL: {{^}}round_v2f64:
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; SI: s_endpgm
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define void @round_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %in) #0 {
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%result = call <2 x double> @llvm.round.v2f64(<2 x double> %in) #1
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store <2 x double> %result, <2 x double> addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: {{^}}round_v4f64:
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; SI: s_endpgm
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define void @round_v4f64(<4 x double> addrspace(1)* %out, <4 x double> %in) #0 {
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%result = call <4 x double> @llvm.round.v4f64(<4 x double> %in) #1
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store <4 x double> %result, <4 x double> addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: {{^}}round_v8f64:
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; SI: s_endpgm
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define void @round_v8f64(<8 x double> addrspace(1)* %out, <8 x double> %in) #0 {
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%result = call <8 x double> @llvm.round.v8f64(<8 x double> %in) #1
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store <8 x double> %result, <8 x double> addrspace(1)* %out
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ret void
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}
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declare i32 @llvm.r600.read.tidig.x() #1
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declare double @llvm.round.f64(double) #1
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declare <2 x double> @llvm.round.v2f64(<2 x double>) #1
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declare <4 x double> @llvm.round.v4f64(<4 x double>) #1
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declare <8 x double> @llvm.round.v8f64(<8 x double>) #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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