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https://github.com/RPCS3/llvm-mirror.git
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cb35142c34
Fix 64-bit copy to SCC by restricting the pattern resulting in such a copy to subtargets supporting 64-bit scalar compare, and mapping the copy to S_CMP_LG_U64. Before introducing the S_CSELECT pattern with explicit SCC (0045786f146e78afee49eee053dc29ebc842fee1), there was no need for handling 64-bit copy to SCC ($scc = COPY sreg_64). The proposed handling to read only the low bits was however based on a false premise that it is only one bit that matters, while in fact the copy source might be a vector of booleans and all bits need to be considered. The practical problem of mapping the 64-bit copy to SCC is that the natural instruction to use (S_CMP_LG_U64) is not available on old hardware. Fix it by restricting the problematic pattern to subtargets supporting the instruction (hasScalarCompareEq64). Differential Revision: https://reviews.llvm.org/D85207
106 lines
3.7 KiB
LLVM
106 lines
3.7 KiB
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -allow-deprecated-dag-overlap -check-prefix=SI -check-prefix=FUNC %s
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; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -allow-deprecated-dag-overlap -check-prefix=CI -check-prefix=FUNC %s
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; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -allow-deprecated-dag-overlap -check-prefix=CI -check-prefix=FUNC %s
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declare double @llvm.ceil.f64(double) nounwind readnone
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declare <2 x double> @llvm.ceil.v2f64(<2 x double>) nounwind readnone
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declare <3 x double> @llvm.ceil.v3f64(<3 x double>) nounwind readnone
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declare <4 x double> @llvm.ceil.v4f64(<4 x double>) nounwind readnone
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declare <8 x double> @llvm.ceil.v8f64(<8 x double>) nounwind readnone
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declare <16 x double> @llvm.ceil.v16f64(<16 x double>) nounwind readnone
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; FUNC-LABEL: {{^}}fceil_f64:
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; CI: v_ceil_f64_e32
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; SI: s_bfe_u32 [[SEXP:s[0-9]+]], {{s[0-9]+}}, 0xb0014
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; SI-DAG: s_and_b32 s{{[0-9]+}}, s{{[0-9]+}}, 0x80000000
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; FIXME: We should be using s_addk_i32 here, but the reg allocation hints
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; are not always followed.
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; SI-DAG: s_add_i32 [[SEXP0:s[0-9]+]], [[SEXP]], 0xfffffc01
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; SI-DAG: s_lshr_b64 s[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}], [[SEXP0]]
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; SI-DAG: s_andn2_b64
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; SI-DAG: cmp_gt_i32
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; SI-DAG: cndmask_b32
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; SI-DAG: cndmask_b32
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; SI-DAG: cmp_lt_i32
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; SI-DAG: cndmask_b32
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; SI-DAG: cndmask_b32
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; SI-DAG: v_cmp_gt_f64
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; SI-DAG: v_cmp_lg_f64
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; SI-DAG: v_cndmask_b32
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; SI: v_cndmask_b32
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; SI: v_add_f64
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; SI: s_endpgm
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define amdgpu_kernel void @fceil_f64(double addrspace(1)* %out, double %x) {
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%y = call double @llvm.ceil.f64(double %x) nounwind readnone
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store double %y, double addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: {{^}}fceil_v2f64:
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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define amdgpu_kernel void @fceil_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %x) {
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%y = call <2 x double> @llvm.ceil.v2f64(<2 x double> %x) nounwind readnone
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store <2 x double> %y, <2 x double> addrspace(1)* %out
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ret void
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}
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; FIXME-FUNC-LABEL: {{^}}fceil_v3f64:
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; FIXME-CI: v_ceil_f64_e32
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; FIXME-CI: v_ceil_f64_e32
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; FIXME-CI: v_ceil_f64_e32
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; define amdgpu_kernel void @fceil_v3f64(<3 x double> addrspace(1)* %out, <3 x double> %x) {
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; %y = call <3 x double> @llvm.ceil.v3f64(<3 x double> %x) nounwind readnone
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; store <3 x double> %y, <3 x double> addrspace(1)* %out
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; ret void
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; }
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; FUNC-LABEL: {{^}}fceil_v4f64:
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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define amdgpu_kernel void @fceil_v4f64(<4 x double> addrspace(1)* %out, <4 x double> %x) {
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%y = call <4 x double> @llvm.ceil.v4f64(<4 x double> %x) nounwind readnone
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store <4 x double> %y, <4 x double> addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: {{^}}fceil_v8f64:
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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define amdgpu_kernel void @fceil_v8f64(<8 x double> addrspace(1)* %out, <8 x double> %x) {
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%y = call <8 x double> @llvm.ceil.v8f64(<8 x double> %x) nounwind readnone
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store <8 x double> %y, <8 x double> addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: {{^}}fceil_v16f64:
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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; CI: v_ceil_f64_e32
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define amdgpu_kernel void @fceil_v16f64(<16 x double> addrspace(1)* %out, <16 x double> %x) {
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%y = call <16 x double> @llvm.ceil.v16f64(<16 x double> %x) nounwind readnone
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store <16 x double> %y, <16 x double> addrspace(1)* %out
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ret void
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}
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