mirror of
https://github.com/c64scene-ar/llvm-6502.git
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507c5af818
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214612 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.0 KiB
LLVM
69 lines
2.0 KiB
LLVM
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=R600 -check-prefix=FUNC %s
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; FUNC-LABEL: @fneg_f32
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; R600: -PV
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; SI: V_XOR_B32
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define void @fneg_f32(float addrspace(1)* %out, float %in) {
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%fneg = fsub float -0.000000e+00, %in
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store float %fneg, float addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: @fneg_v2f32
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; R600: -PV
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; R600: -PV
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; SI: V_XOR_B32
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; SI: V_XOR_B32
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define void @fneg_v2f32(<2 x float> addrspace(1)* nocapture %out, <2 x float> %in) {
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%fneg = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, %in
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store <2 x float> %fneg, <2 x float> addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: @fneg_v4f32
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; R600: -PV
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; R600: -T
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; R600: -PV
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; R600: -PV
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; SI: V_XOR_B32
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; SI: V_XOR_B32
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; SI: V_XOR_B32
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; SI: V_XOR_B32
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define void @fneg_v4f32(<4 x float> addrspace(1)* nocapture %out, <4 x float> %in) {
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%fneg = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %in
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store <4 x float> %fneg, <4 x float> addrspace(1)* %out
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ret void
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}
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; DAGCombiner will transform:
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; (fneg (f32 bitcast (i32 a))) => (f32 bitcast (xor (i32 a), 0x80000000))
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; unless the target returns true for isNegFree()
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; FUNC-LABEL: @fneg_free_f32
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; R600-NOT: XOR
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; R600: -KC0[2].Z
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; XXX: We could use V_ADD_F32_e64 with the negate bit here instead.
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; SI: V_SUB_F32_e64 v{{[0-9]}}, 0.000000e+00, s{{[0-9]}}, 0, 0
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define void @fneg_free_f32(float addrspace(1)* %out, i32 %in) {
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%bc = bitcast i32 %in to float
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%fsub = fsub float 0.0, %bc
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store float %fsub, float addrspace(1)* %out
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ret void
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}
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; FUNC-LABEL: @fneg_fold
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; SI: S_LOAD_DWORD [[NEG_VALUE:s[0-9]+]], s[{{[0-9]+:[0-9]+}}], 0xb
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; SI-NOT: XOR
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; SI: V_MUL_F32_e64 v{{[0-9]+}}, -[[NEG_VALUE]], v{{[0-9]+}}
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define void @fneg_fold_f32(float addrspace(1)* %out, float %in) {
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%fsub = fsub float -0.0, %in
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%fmul = fmul float %fsub, %in
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store float %fmul, float addrspace(1)* %out
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ret void
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}
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