[AMDGPU] fixed divergence driven shift operations selection

[alex-t]

Summary

change https://reviews.llvm.org/D64725 removes “isDivergent” predicates from the scalar shifts.
As a result we easy can select S_LSHL_B32 for divergent arguments.

[rampitec]

Is there a test for scalar selection?

llvm/lib/Target/AMDGPU/VOP2Instructions.td

548

Any tests for GFX10 on this?

llvm/lib/Target/AMDGPU/VOP3Instructions.td

388

Any tests for GFX10 on this?

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir

2 ↗

(On Diff #240590)

Ugh... Fiji is GFX8. Instead of dropping test for tahiti just fix the check-prefix for fiji.

[alex-t]

divergence driven selection test for shift operations added
tests updated

llvm/lib/Target/AMDGPU/VOP2Instructions.td

548

Will be an assertion "Opcode does not exist on target"

llvm/lib/Target/AMDGPU/VOP3Instructions.td

388

Will be an assertion "Opcode does not exist on target"

[rampitec]

llvm/lib/Target/AMDGPU/VOP2Instructions.td

548

But we need a gfx10 test to check proper selection of IR shifts. I do not see these tests.

llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement.ll

982 ↗

(On Diff #241120)

It does not belong to this change. Please generate a proper diff.

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir

2 ↗

(On Diff #240590)

Please return the dropped tahiti run line.

llvm/test/CodeGen/AMDGPU/shift-select.ll

3

Please add another line for gfx1010.

58

You also need tests for i64.

135

Newline.

[alex-t]

Diff corrected. GFX10 test added.

[arsenm]

I expected this to fix the test XFAIL'd in c12f046eb96f8462b3fd3889344ba344de5ace1f, but it seems to to have?

[rampitec]

llvm/test/CodeGen/AMDGPU/shift-select.ll

58

Would be LGTM if there were i64 tests.

[alex-t]

In D73483#1849587, @arsenm wrote:

I expected this to fix the test XFAIL'd in c12f046eb96f8462b3fd3889344ba344de5ace1f, but it seems to to have?

I haven't seen any tests XFAIL'd by this c12f046eb96f8462b3fd3889344ba344de5ace1f commit.
What did you mean? Could you explain please?

[alex-t]

i64 tests added

[arsenm]

In D73483#1851394, @alex-t wrote:

In D73483#1849587, @arsenm wrote:

I expected this to fix the test XFAIL'd in c12f046eb96f8462b3fd3889344ba344de5ace1f, but it seems to to have?

I haven't seen any tests XFAIL'd by this c12f046eb96f8462b3fd3889344ba344de5ace1f commit.
What did you mean? Could you explain please?

test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.update.dpp.ll is now XFAILed

[alex-t]

llvm.amdgcn.update.dpp test updated

llvm/lib/Target/AMDGPU/SOPInstructions.td

 } // End Defs = [SCC]
 
 // Use added complexity so these patterns are preferred to the VALU patterns.
 let AddedComplexity = 1 in {
 
 let Defs = [SCC] in {
 // TODO: b64 versions require VOP3 change since v_lshlrev_b64 is VOP3
 def S_LSHL_B32 : SOP2_32 <"s_lshl_b32",
-  [(set SReg_32:$sdst, (shl (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_32:$sdst, (UniformBinFrag<shl> (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
 >;
 def S_LSHL_B64 : SOP2_64_32 <"s_lshl_b64",
-  [(set SReg_64:$sdst, (shl (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_64:$sdst, (UniformBinFrag<shl> (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))] 
 >;
 def S_LSHR_B32 : SOP2_32 <"s_lshr_b32",
-  [(set SReg_32:$sdst, (srl (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_32:$sdst, (UniformBinFrag<srl> (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
 >;
 def S_LSHR_B64 : SOP2_64_32 <"s_lshr_b64",
-  [(set SReg_64:$sdst, (srl (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_64:$sdst, (UniformBinFrag<srl> (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))]
 >;
 def S_ASHR_I32 : SOP2_32 <"s_ashr_i32",
-  [(set SReg_32:$sdst, (sra (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_32:$sdst, (UniformBinFrag<sra> (i32 SSrc_b32:$src0), (i32 SSrc_b32:$src1)))]
 >;
 def S_ASHR_I64 : SOP2_64_32 <"s_ashr_i64",
-  [(set SReg_64:$sdst, (sra (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))]
+  [(set SReg_64:$sdst, (UniformBinFrag<sra> (i64 SSrc_b64:$src0), (i32 SSrc_b32:$src1)))]
 >;
 } // End Defs = [SCC]
 
 def S_BFM_B32 : SOP2_32 <"s_bfm_b32",
   [(set i32:$sdst, (UniformBinFrag<AMDGPUbfm> i32:$src0, i32:$src1))]>;
 def S_BFM_B64 : SOP2_64_32_32 <"s_bfm_b64">;
 
 // TODO: S_MUL_I32 require V_MUL_LO_I32 from VOP3 change

llvm/lib/Target/AMDGPU/VOP2Instructions.td

 defm V_CVT_PK_I16_I32 : VOP2Inst <"v_cvt_pk_i16_i32", VOP_NO_EXT<VOP_V2I16_I32_I32>, AMDGPUpk_i16_i32>;
 
 
 let SubtargetPredicate = isGFX6GFX7 in {
 defm V_MIN_LEGACY_F32 : VOP2Inst <"v_min_legacy_f32", VOP_F32_F32_F32, AMDGPUfmin_legacy>;
 defm V_MAX_LEGACY_F32 : VOP2Inst <"v_max_legacy_f32", VOP_F32_F32_F32, AMDGPUfmax_legacy>;
 } // End SubtargetPredicate = isGFX6GFX7
 
-let SubtargetPredicate = isGFX6GFX7GFX10 in {
 let isCommutable = 1 in {
+let SubtargetPredicate = isGFX6GFX7GFX10 in {
 defm V_MAC_LEGACY_F32 : VOP2Inst <"v_mac_legacy_f32", VOP_F32_F32_F32>;
-defm V_LSHR_B32 : VOP2Inst <"v_lshr_b32", VOP_I32_I32_I32, srl>;
-defm V_ASHR_I32 : VOP2Inst <"v_ashr_i32", VOP_I32_I32_I32, sra>;
-defm V_LSHL_B32 : VOP2Inst <"v_lshl_b32", VOP_I32_I32_I32, shl>;
-} // End isCommutable = 1
 } // End SubtargetPredicate = isGFX6GFX7GFX10
+let SubtargetPredicate = isGFX6GFX7 in {
+defm V_LSHR_B32 : VOP2Inst <"v_lshr_b32", VOP_PAT_GEN<VOP_I32_I32_I32>, srl>;
+defm V_ASHR_I32 : VOP2Inst <"v_ashr_i32", VOP_PAT_GEN<VOP_I32_I32_I32>, sra>;
+defm V_LSHL_B32 : VOP2Inst <"v_lshl_b32", VOP_PAT_GEN<VOP_I32_I32_I32>, shl>;
+} // End SubtargetPredicate = isGFX6GFX7
+} // End isCommutable = 1
+
 
 class DivergentBinOp<SDPatternOperator Op, VOP_Pseudo Inst> :
   GCNPat<
       (getDivergentFrag<Op>.ret Inst.Pfl.Src0VT:$src0, Inst.Pfl.Src1VT:$src1),
       !if(!cast<Commutable_REV>(Inst).IsOrig,
         (Inst $src0, $src1),
         (Inst $src1, $src0)
       )

llvm/lib/Target/AMDGPU/VOP3Instructions.td

 def V_MQSAD_PK_U16_U8 : VOP3Inst <"v_mqsad_pk_u16_u8", VOP3_Profile<VOP_I64_I64_I32_I64, VOP3_CLAMP>>;
 } // End Constraints = "@earlyclobber $vdst"
 
 def V_TRIG_PREOP_F64 : VOP3Inst <"v_trig_preop_f64", VOP3_Profile<VOP_F64_F64_I32>, AMDGPUtrig_preop> {
   let SchedRW = [WriteDouble];
 }
 
 let SchedRW = [Write64Bit] in {
-let SubtargetPredicate = isGFX6GFX7GFX10 in {
+let SubtargetPredicate = isGFX6GFX7 in {
 def V_LSHL_B64 : VOP3Inst <"v_lshl_b64", VOP3_Profile<VOP_I64_I64_I32>, shl>;
 def V_LSHR_B64 : VOP3Inst <"v_lshr_b64", VOP3_Profile<VOP_I64_I64_I32>, srl>;
 def V_ASHR_I64 : VOP3Inst <"v_ashr_i64", VOP3_Profile<VOP_I64_I64_I32>, sra>;
+} // End SubtargetPredicate = isGFX6GFX7
+let SubtargetPredicate = isGFX6GFX7GFX10 in {
 def V_MULLIT_F32 : VOP3Inst <"v_mullit_f32", VOP3_Profile<VOP_F32_F32_F32_F32>>;
 } // End SubtargetPredicate = isGFX6GFX7GFX10
 
 let SubtargetPredicate = isGFX8Plus in {
 def V_LSHLREV_B64 : VOP3Inst <"v_lshlrev_b64", VOP3_Profile<VOP_I64_I32_I64>, lshl_rev>;
 def V_LSHRREV_B64 : VOP3Inst <"v_lshrrev_b64", VOP3_Profile<VOP_I64_I32_I64>, lshr_rev>;
 def V_ASHRREV_I64 : VOP3Inst <"v_ashrrev_i64", VOP3_Profile<VOP_I64_I32_I64>, ashr_rev>;
 } // End SubtargetPredicate = isGFX8Plus

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-ashr.mir

bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
     ; GFX9: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     ; GFX10-LABEL: name: ashr_s64_sv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
-    ; GFX10: [[V_ASHR_I64_:%[0-9]+]]:vreg_64 = V_ASHR_I64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_ASHR_I64_]]
+    ; GFX10: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     %0:sgpr(s64) = COPY $sgpr0_sgpr1
     %1:vgpr(s32) = COPY $vgpr0
     %2:vgpr(s64) = G_ASHR %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: ashr_s64_vs
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
     ; GFX9: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     ; GFX10-LABEL: name: ashr_s64_vs
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
-    ; GFX10: [[V_ASHR_I64_:%[0-9]+]]:vreg_64 = V_ASHR_I64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_ASHR_I64_]]
+    ; GFX10: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:sgpr(s32) = COPY $sgpr0
     %2:vgpr(s64) = G_ASHR %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: ashr_s64_vv
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
     ; GFX9: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     ; GFX10-LABEL: name: ashr_s64_vv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-    ; GFX10: [[V_ASHR_I64_:%[0-9]+]]:vreg_64 = V_ASHR_I64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_ASHR_I64_]]
+    ; GFX10: [[V_ASHRREV_I64_:%[0-9]+]]:vreg_64 = V_ASHRREV_I64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_ASHRREV_I64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:vgpr(s32) = COPY $vgpr2
     %2:vgpr(s64) = G_ASHR %0, %1
     S_ENDPGM 0, implicit %2
 ...

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-lshr.mir

bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
     ; GFX9: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     ; GFX10-LABEL: name: lshr_s64_sv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
-    ; GFX10: [[V_LSHR_B64_:%[0-9]+]]:vreg_64 = V_LSHR_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHR_B64_]]
+    ; GFX10: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     %0:sgpr(s64) = COPY $sgpr0_sgpr1
     %1:vgpr(s32) = COPY $vgpr0
     %2:vgpr(s64) = G_LSHR %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: lshr_s64_vs
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
     ; GFX9: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     ; GFX10-LABEL: name: lshr_s64_vs
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
-    ; GFX10: [[V_LSHR_B64_:%[0-9]+]]:vreg_64 = V_LSHR_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHR_B64_]]
+    ; GFX10: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:sgpr(s32) = COPY $sgpr0
     %2:vgpr(s64) = G_LSHR %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: lshr_s64_vv
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
     ; GFX9: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     ; GFX10-LABEL: name: lshr_s64_vv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-    ; GFX10: [[V_LSHR_B64_:%[0-9]+]]:vreg_64 = V_LSHR_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHR_B64_]]
+    ; GFX10: [[V_LSHRREV_B64_:%[0-9]+]]:vreg_64 = V_LSHRREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHRREV_B64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:vgpr(s32) = COPY $vgpr2
     %2:vgpr(s64) = G_LSHR %0, %1
     S_ENDPGM 0, implicit %2
 ...
 

llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-shl.mir

bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
     ; GFX9: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     ; GFX10-LABEL: name: shl_s64_sv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr0
-    ; GFX10: [[V_LSHL_B64_:%[0-9]+]]:vreg_64 = V_LSHL_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHL_B64_]]
+    ; GFX10: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     %0:sgpr(s64) = COPY $sgpr0_sgpr1
     %1:vgpr(s32) = COPY $vgpr0
     %2:vgpr(s64) = G_SHL %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: shl_s64_vs
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
     ; GFX9: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     ; GFX10-LABEL: name: shl_s64_vs
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
-    ; GFX10: [[V_LSHL_B64_:%[0-9]+]]:vreg_64 = V_LSHL_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHL_B64_]]
+    ; GFX10: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:sgpr(s32) = COPY $sgpr0
     %2:vgpr(s64) = G_SHL %0, %1
     S_ENDPGM 0, implicit %2
 ...
 
 ---
 name: shl_s64_vv
bb.0:
     ; GFX9: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX9: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
     ; GFX9: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
     ; GFX9: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     ; GFX10-LABEL: name: shl_s64_vv
     ; GFX10: $vcc_hi = IMPLICIT_DEF
     ; GFX10: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
     ; GFX10: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-    ; GFX10: [[V_LSHL_B64_:%[0-9]+]]:vreg_64 = V_LSHL_B64 [[COPY]], [[COPY1]], implicit $exec
-    ; GFX10: S_ENDPGM 0, implicit [[V_LSHL_B64_]]
+    ; GFX10: [[V_LSHLREV_B64_:%[0-9]+]]:vreg_64 = V_LSHLREV_B64 [[COPY1]], [[COPY]], implicit $exec
+    ; GFX10: S_ENDPGM 0, implicit [[V_LSHLREV_B64_]]
     %0:vgpr(s64) = COPY $vgpr0_vgpr1
     %1:vgpr(s32) = COPY $vgpr2
     %2:vgpr(s64) = G_SHL %0, %1
     S_ENDPGM 0, implicit %2
 ...
 

llvm/test/CodeGen/AMDGPU/ashr.v2i16.ll

 ; VI: v_ashrrev_i16_sdwa v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}} dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
 ; VI: v_or_b32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
 
 ; CI: s_mov_b32 [[MASK:s[0-9]+]], 0xffff{{$}}
 ; CI-DAG: v_and_b32_e32 v{{[0-9]+}}, [[MASK]], [[RHS]]
 ; CI-DAG: v_bfe_i32 v{{[0-9]+}}, v{{[0-9]+}}, 0, 16
 ; CI: v_ashrrev_i32_e32 v{{[0-9]+}}, 16, [[LHS]]
 ; CI: v_lshrrev_b32_e32 v{{[0-9]+}}, 16, v{{[0-9]+}}
-; CI: v_ashrrev_i32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
-; CI: v_ashrrev_i32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
+; CI: v_ashr_i32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
+; CI: v_ashr_i32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
 ; CI: v_lshlrev_b32_e32 v{{[0-9]+}}, 16, v{{[0-9]+}}
 ; CI: v_and_b32_e32 v{{[0-9]+}}, [[MASK]], v{{[0-9]+}}
 ; CI: v_or_b32_e32 v{{[0-9]+}}, v{{[0-9]+}}, v{{[0-9]+}}
 define amdgpu_kernel void @v_ashr_v2i16(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) #0 {
   %tid = call i32 @llvm.amdgcn.workitem.id.x()
   %tid.ext = sext i32 %tid to i64
   %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
   %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext

llvm/test/CodeGen/AMDGPU/bfe-patterns.ll

define amdgpu_kernel void @v_ubfe_sub_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in0, i32 addrspace(1)* %in1) #1 {
   ret void
 }
 
 ; GCN-LABEL: {{^}}v_ubfe_sub_multi_use_shl_i32:
 ; GCN: {{buffer|flat}}_load_dword [[SRC:v[0-9]+]]
 ; GCN: {{buffer|flat}}_load_dword [[WIDTH:v[0-9]+]]
 ; GCN: v_sub_{{[iu]}}32_e32 [[SUB:v[0-9]+]], vcc, 32, [[WIDTH]]
 
-; GCN-NEXT: v_lshlrev_b32_e32 [[SHL:v[0-9]+]], [[SUB]], [[SRC]]
-; GCN-NEXT: v_lshrrev_b32_e32 [[BFE:v[0-9]+]], [[SUB]], [[SHL]]
+; SI-NEXT: v_lshl_b32_e32 [[SHL:v[0-9]+]], [[SRC]], [[SUB]]
+; SI-NEXT: v_lshr_b32_e32 [[BFE:v[0-9]+]], [[SHL]], [[SUB]]
+
+; VI-NEXT: v_lshlrev_b32_e32 [[SHL:v[0-9]+]], [[SUB]], [[SRC]]
+; VI-NEXT: v_lshrrev_b32_e32 [[BFE:v[0-9]+]], [[SUB]], [[SHL]]
 
 ; GCN: [[BFE]]
 ; GCN: [[SHL]]
 define amdgpu_kernel void @v_ubfe_sub_multi_use_shl_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in0, i32 addrspace(1)* %in1) #1 {
   %id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
   %in0.gep = getelementptr i32, i32 addrspace(1)* %in0, i32 %id.x
   %in1.gep = getelementptr i32, i32 addrspace(1)* %in1, i32 %id.x
   %out.gep = getelementptr i32, i32 addrspace(1)* %out, i32 %id.x
define amdgpu_kernel void @v_sbfe_sub_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in0, i32 addrspace(1)* %in1) #1 {
   ret void
 }
 
 ; GCN-LABEL: {{^}}v_sbfe_sub_multi_use_shl_i32:
 ; GCN: {{buffer|flat}}_load_dword [[SRC:v[0-9]+]]
 ; GCN: {{buffer|flat}}_load_dword [[WIDTH:v[0-9]+]]
 ; GCN: v_sub_{{[iu]}}32_e32 [[SUB:v[0-9]+]], vcc, 32, [[WIDTH]]
 
-; GCN-NEXT: v_lshlrev_b32_e32 [[SHL:v[0-9]+]], [[SUB]], [[SRC]]
-; GCN-NEXT: v_ashrrev_i32_e32 [[BFE:v[0-9]+]], [[SUB]], [[SHL]]
+; SI-NEXT: v_lshl_b32_e32 [[SHL:v[0-9]+]], [[SRC]], [[SUB]]
+; SI-NEXT: v_ashr_i32_e32 [[BFE:v[0-9]+]], [[SHL]], [[SUB]]
+
+; VI-NEXT: v_lshlrev_b32_e32 [[SHL:v[0-9]+]], [[SUB]], [[SRC]]
+; VI-NEXT: v_ashrrev_i32_e32 [[BFE:v[0-9]+]], [[SUB]], [[SHL]]
 
 ; GCN: [[BFE]]
 ; GCN: [[SHL]]
 define amdgpu_kernel void @v_sbfe_sub_multi_use_shl_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in0, i32 addrspace(1)* %in1) #1 {
   %id.x = tail call i32 @llvm.amdgcn.workitem.id.x()
   %in0.gep = getelementptr i32, i32 addrspace(1)* %in0, i32 %id.x
   %in1.gep = getelementptr i32, i32 addrspace(1)* %in1, i32 %id.x
   %out.gep = getelementptr i32, i32 addrspace(1)* %out, i32 %id.x

llvm/test/CodeGen/AMDGPU/commute-shifts.ll

 ; SI-NEXT:    s_mov_b32 s3, s0
 ; SI-NEXT:    s_mov_b32 s4, s0
 ; SI-NEXT:    s_mov_b32 s5, s0
 ; SI-NEXT:    s_mov_b32 s6, s0
 ; SI-NEXT:    s_mov_b32 s7, s0
 ; SI-NEXT:    image_load v2, v0, s[0:7] dmask:0x1 unorm
 ; SI-NEXT:    v_and_b32_e32 v0, 7, v0
 ; SI-NEXT:    s_waitcnt vmcnt(0)
-; SI-NEXT:    v_lshrrev_b32_e32 v0, v0, v2
+; SI-NEXT:    v_lshr_b32_e32 v0, v2, v0
 ; SI-NEXT:    v_and_b32_e32 v0, 1, v0
 ; SI-NEXT:    v_cmp_eq_u32_e32 vcc, 1, v0
 ; SI-NEXT:    v_cndmask_b32_e32 v0, 0, v1, vcc
 ; SI-NEXT:    v_cvt_pkrtz_f16_f32_e32 v0, s0, v0
 ; SI-NEXT:    ; return to shader part epilog
 ;
 ; VI-LABEL: main:
 ; VI:       ; %bb.0: ; %bb

llvm/test/CodeGen/AMDGPU/extract-lowbits.ll

 }
 
 define i32 @bzhi32_d1_indexzext(i32 %val, i8 %numlowbits) nounwind {
 ; SI-LABEL: bzhi32_d1_indexzext:
 ; SI:       ; %bb.0:
 ; SI-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
 ; SI-NEXT:    v_sub_i32_e32 v1, vcc, 32, v1
 ; SI-NEXT:    v_and_b32_e32 v1, 0xff, v1
-; SI-NEXT:    v_lshlrev_b32_e32 v0, v1, v0
-; SI-NEXT:    v_lshrrev_b32_e32 v0, v1, v0
+; SI-NEXT:    v_lshl_b32_e32 v0, v0, v1
+; SI-NEXT:    v_lshr_b32_e32 v0, v0, v1
 ; SI-NEXT:    s_setpc_b64 s[30:31]
 ;
 ; VI-LABEL: bzhi32_d1_indexzext:
 ; VI:       ; %bb.0:
 ; VI-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
 ; VI-NEXT:    v_sub_u16_e32 v1, 32, v1
 ; VI-NEXT:    v_and_b32_e32 v1, 0xff, v1
 ; VI-NEXT:    v_lshlrev_b32_e32 v0, v1, v0
 ; VI-NEXT:    v_lshrrev_b32_e32 v0, v1, v0
 ; VI-NEXT:    s_setpc_b64 s[30:31]
   %numhighbits = sub i8 32, %numlowbits
   %sh_prom = zext i8 %numhighbits to i32
   %highbitscleared = shl i32 %val, %sh_prom
   %masked = lshr i32 %highbitscleared, %sh_prom
   ret i32 %masked
 }

llvm/test/CodeGen/AMDGPU/inline-asm.ll

-; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck %s
-; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck --check-prefix=CHECK --check-prefix=PRE-GFX8 %s
+; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck  --check-prefix=CHECK --check-prefix=GFX8 %s
 
 ; CHECK-LABEL: {{^}}inline_asm:
 ; CHECK: s_endpgm
 ; CHECK: s_endpgm
 define amdgpu_kernel void @inline_asm(i32 addrspace(1)* %out) {
 entry:
   store i32 5, i32 addrspace(1)* %out
   call void asm sideeffect "s_endpgm", ""()
entry:
   call void asm sideeffect "; use $0 $1 ", "{v0}, {v1}"(i1 %val0, i1 %val1)
   ret void
 }
 
 ; CHECK-LABEL: {{^}}muliple_def_phys_vgpr:
 ; CHECK: ; def v0
 ; CHECK: v_mov_b32_e32 v1, v0
 ; CHECK: ; def v0
-; CHECK: v_lshlrev_b32_e32 v{{[0-9]+}}, v0, v1
+; PRE-GFX8: v_lshl_b32_e32 v{{[0-9]+}}, v1, v0
+; GFX8: v_lshlrev_b32_e32 v{{[0-9]+}}, v0, v1
 define amdgpu_kernel void @muliple_def_phys_vgpr() {
 entry:
   %def0 = call i32 asm sideeffect "; def $0 ", "={v0}"()
   %def1 = call i32 asm sideeffect "; def $0 ", "={v0}"()
   %add = shl i32 %def0, %def1
   store i32 %add, i32 addrspace(1)* undef
   ret void
 }

llvm/test/CodeGen/AMDGPU/lshr.v2i16.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9 %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,VI,CIVI %s
+; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,CI,CIVI %s
 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,CIVI,VI %s
 ; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,CIVI,CI %s
 
 define amdgpu_kernel void @s_lshr_v2i16(<2 x i16> addrspace(1)* %out, <2 x i16> %lhs, <2 x i16> %rhs) #0 {
 ; GFX9-LABEL: s_lshr_v2i16:
 ; GFX9:       ; %bb.0:
 ; GFX9-NEXT:    s_load_dwordx2 s[2:3], s[0:1], 0x24
 ; GFX9-NEXT:    s_load_dword s4, s[0:1], 0x2c

 ; CI-NEXT:    s_mov_b32 s8, 0xffff
 ; CI-NEXT:    s_mov_b64 s[2:3], s[6:7]
 ; CI-NEXT:    s_waitcnt vmcnt(1)
 ; CI-NEXT:    v_lshrrev_b32_e32 v4, 16, v2
 ; CI-NEXT:    s_waitcnt vmcnt(0)
 ; CI-NEXT:    v_lshrrev_b32_e32 v5, 16, v3
 ; CI-NEXT:    v_and_b32_e32 v2, s8, v2
 ; CI-NEXT:    v_and_b32_e32 v3, s8, v3
-; CI-NEXT:    v_lshrrev_b32_e32 v2, v3, v2
-; CI-NEXT:    v_lshrrev_b32_e32 v3, v5, v4
+; CI-NEXT:    v_lshr_b32_e32 v2, v2, v3
+; CI-NEXT:    v_lshr_b32_e32 v3, v4, v5
 ; CI-NEXT:    v_lshlrev_b32_e32 v3, 16, v3
 ; CI-NEXT:    v_or_b32_e32 v2, v2, v3
 ; CI-NEXT:    buffer_store_dword v2, v[0:1], s[0:3], 0 addr64
 ; CI-NEXT:    s_endpgm
   %tid = call i32 @llvm.amdgcn.workitem.id.x()
   %tid.ext = sext i32 %tid to i64
   %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
   %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext

 ; CI-NEXT:    v_lshrrev_b32_e32 v7, 16, v3
 ; CI-NEXT:    s_waitcnt vmcnt(0)
 ; CI-NEXT:    v_lshrrev_b32_e32 v8, 16, v4
 ; CI-NEXT:    v_lshrrev_b32_e32 v9, 16, v5
 ; CI-NEXT:    v_and_b32_e32 v2, s8, v2
 ; CI-NEXT:    v_and_b32_e32 v4, s8, v4
 ; CI-NEXT:    v_and_b32_e32 v3, s8, v3
 ; CI-NEXT:    v_and_b32_e32 v5, s8, v5
-; CI-NEXT:    v_lshrrev_b32_e32 v3, v5, v3
-; CI-NEXT:    v_lshrrev_b32_e32 v5, v9, v7
-; CI-NEXT:    v_lshrrev_b32_e32 v2, v4, v2
-; CI-NEXT:    v_lshrrev_b32_e32 v4, v8, v6
+; CI-NEXT:    v_lshr_b32_e32 v3, v3, v5
+; CI-NEXT:    v_lshr_b32_e32 v5, v7, v9
+; CI-NEXT:    v_lshr_b32_e32 v2, v2, v4
+; CI-NEXT:    v_lshr_b32_e32 v4, v6, v8
 ; CI-NEXT:    v_lshlrev_b32_e32 v5, 16, v5
 ; CI-NEXT:    v_lshlrev_b32_e32 v4, 16, v4
 ; CI-NEXT:    v_or_b32_e32 v3, v3, v5
 ; CI-NEXT:    v_or_b32_e32 v2, v2, v4
 ; CI-NEXT:    buffer_store_dwordx2 v[2:3], v[0:1], s[0:3], 0 addr64
 ; CI-NEXT:    s_endpgm
   %tid = call i32 @llvm.amdgcn.workitem.id.x()
   %tid.ext = sext i32 %tid to i64

llvm/test/CodeGen/AMDGPU/sext-in-reg.ll

define amdgpu_kernel void @v_sext_in_reg_i1_i16(i16 addrspace(3)* %out, i16 addrspace(1)* %ptr) #0 {
   store i16 %sext, i16 addrspace(3)* %out.gep
   ret void
 }
 
 ; FUNC-LABEL: {{^}}v_sext_in_reg_i1_i16_nonload:
 ; GCN: {{buffer|flat|global}}_load_ushort [[VAL0:v[0-9]+]]
 ; GCN: {{buffer|flat|global}}_load_ushort [[VAL1:v[0-9]+]]
 
-; SI: v_lshlrev_b32_e32 [[REG:v[0-9]+]], [[VAL1]], [[VAL0]]
+; SI: v_lshl_b32_e32 [[REG:v[0-9]+]], [[VAL0]], [[VAL1]]
 ; GFX89: v_lshlrev_b16_e32 [[REG:v[0-9]+]], [[VAL1]], [[VAL0]]
 
 ; GCN: v_bfe_i32 [[BFE:v[0-9]+]], [[REG]], 0, 1{{$}}
 ; GCN: ds_write_b16 v{{[0-9]+}}, [[BFE]]
 define amdgpu_kernel void @v_sext_in_reg_i1_i16_nonload(i16 addrspace(3)* %out, i16 addrspace(1)* %aptr, i16 addrspace(1)* %bptr, i16 %s.val) nounwind {
   %tid = call i32 @llvm.r600.read.tidig.x()
   %a.gep = getelementptr i16, i16 addrspace(1)* %aptr, i32 %tid
   %b.gep = getelementptr i16, i16 addrspace(1)* %bptr, i32 %tid

llvm/test/CodeGen/AMDGPU/shift-select.ll

+; RUN: llc -march=amdgcn -mcpu=tahiti -stop-after=instruction-select -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX6 %s
+; RUN: llc -march=amdgcn -mcpu=fiji -stop-after=instruction-select -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX8-10 %s
+; RUN: llc -march=amdgcn -mcpu=gfx1010 -stop-after=instruction-select -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX8-10 %s
+
+; GCN-LABEL: name:            s_shl_i32
+; GCN: S_LSHL_B32
+define amdgpu_kernel void @s_shl_i32(i32 addrspace(1)* %out, i32 %lhs, i32 %rhs) {
+  %result = shl i32 %lhs, %rhs
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_shl_i32
+; GFX6: V_LSHL_B32_e32
+; GFX8-10: V_LSHLREV_B32_e32
+define amdgpu_kernel void @v_shl_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %b_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 %tid
+  %a = load i32, i32 addrspace(1)* %in
+  %b = load i32, i32 addrspace(1)* %b_ptr
+  %result = shl i32 %a, %b
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            s_lshr_i32
+; GCN: S_LSHR_B32
+define amdgpu_kernel void @s_lshr_i32(i32 addrspace(1)* %out, i32 %lhs, i32 %rhs) {
+  %result = lshr i32 %lhs, %rhs
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_lshr_i32
+; GFX6: V_LSHR_B32_e32
+; GFX8-10: V_LSHRREV_B32_e64
+define amdgpu_kernel void @v_lshr_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %b_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 %tid
+  %a = load i32, i32 addrspace(1)* %in
+  %b = load i32, i32 addrspace(1)* %b_ptr
+  %result = lshr i32 %a, %b
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            s_ashr_i32
+; GCN: S_ASHR_I32
+define amdgpu_kernel void @s_ashr_i32(i32 addrspace(1)* %out, i32 %lhs, i32 %rhs) #0 {
+  %result = ashr i32 %lhs, %rhs
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_ashr_i32
+; GFX6: V_ASHR_I32_e32
+; GFX8-10: V_ASHRREV_I32_e64
+define amdgpu_kernel void @v_ashr_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %b_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 %tid
+  %a = load i32, i32 addrspace(1)* %in
+  %b = load i32, i32 addrspace(1)* %b_ptr
+  %result = ashr i32 %a, %b
+  store i32 %result, i32 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            s_shl_i64
+; GCN: S_LSHL_B64
+define amdgpu_kernel void @s_shl_i64(i64 addrspace(1)* %out, i64 %lhs, i64 %rhs) {
+  %result = shl i64 %lhs, %rhs
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_shl_i64
+; GFX6: V_LSHL_B64
+; GFX8: V_LSHLREV_B64
+define amdgpu_kernel void @v_shl_i64(i64 addrspace(1)* %out, i64 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %idx = zext i32 %tid to i64
+  %b_ptr = getelementptr i64, i64 addrspace(1)* %in, i64 %idx
+  %a = load i64, i64 addrspace(1)* %in
+  %b = load i64, i64 addrspace(1)* %b_ptr
+  %result = shl i64 %a, %b
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            s_lshr_i64
+; GCN: S_LSHR_B64
+define amdgpu_kernel void @s_lshr_i64(i64 addrspace(1)* %out, i64 %lhs, i64 %rhs) {
+  %result = lshr i64 %lhs, %rhs
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_lshr_i64
+; GFX6: V_LSHR_B64
+; GFX8: V_LSHRREV_B64
+define amdgpu_kernel void @v_lshr_i64(i64 addrspace(1)* %out, i64 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %idx = zext i32 %tid to i64
+  %b_ptr = getelementptr i64, i64 addrspace(1)* %in, i64 %idx
+  %a = load i64, i64 addrspace(1)* %in
+  %b = load i64, i64 addrspace(1)* %b_ptr
+  %result = lshr i64 %a, %b
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            s_ashr_i64
+; GCN: S_ASHR_I64
+define amdgpu_kernel void @s_ashr_i64(i64 addrspace(1)* %out, i64 %lhs, i64 %rhs) {
+  %result = ashr i64 %lhs, %rhs
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: name:            v_ashr_i64
+; GFX6: V_ASHR_I64
+; GFX8: V_ASHRREV_I64
+define amdgpu_kernel void @v_ashr_i64(i64 addrspace(1)* %out, i64 addrspace(1)* %in) {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %idx = zext i32 %tid to i64
+  %b_ptr = getelementptr i64, i64 addrspace(1)* %in, i64 %idx
+  %a = load i64, i64 addrspace(1)* %in
+  %b = load i64, i64 addrspace(1)* %b_ptr
+  %result = ashr i64 %a, %b
+  store i64 %result, i64 addrspace(1)* %out
+  ret void
+}
+
+declare i32 @llvm.amdgcn.workitem.id.x()

llvm/test/CodeGen/AMDGPU/shl.ll

 ; GCN-NEXT:    s_mov_b64 s[12:13], s[2:3]
 ; GCN-NEXT:    buffer_load_ushort v2, off, s[8:11], 0
 ; GCN-NEXT:    buffer_load_ushort v0, v[0:1], s[12:15], 0 addr64 offset:2
 ; GCN-NEXT:    s_mov_b32 s4, s0
 ; GCN-NEXT:    s_mov_b32 s5, s1
 ; GCN-NEXT:    s_waitcnt vmcnt(0)
 ; GCN-NEXT:    v_add_i32_e32 v0, vcc, 3, v0
 ; GCN-NEXT:    v_and_b32_e32 v0, 0xffff, v0
-; GCN-NEXT:    v_lshlrev_b32_e32 v0, v0, v2
+; GCN-NEXT:    v_lshl_b32_e32 v0, v2, v0
 ; GCN-NEXT:    buffer_store_short v0, off, s[4:7], 0
 ; GCN-NEXT:    s_endpgm
 ;
 ; EG-LABEL: shl_i16_computed_amount:
 ; EG:       ; %bb.0:
 ; EG-NEXT:    ALU 0, @12, KC0[CB0:0-32], KC1[]
 ; EG-NEXT:    TEX 0 @8
 ; EG-NEXT:    ALU 1, @13, KC0[CB0:0-32], KC1[]

 ; GCN-NEXT:    s_mov_b32 s4, s0
 ; GCN-NEXT:    s_mov_b32 s0, 0xffff
 ; GCN-NEXT:    s_mov_b32 s5, s1
 ; GCN-NEXT:    s_waitcnt vmcnt(1)
 ; GCN-NEXT:    v_lshrrev_b32_e32 v3, 16, v0
 ; GCN-NEXT:    v_and_b32_e32 v0, s0, v0
 ; GCN-NEXT:    s_waitcnt vmcnt(0)
 ; GCN-NEXT:    v_lshrrev_b32_e32 v2, 16, v1
-; GCN-NEXT:    v_lshlrev_b32_e32 v0, v0, v1
-; GCN-NEXT:    v_lshlrev_b32_e32 v1, v3, v2
+; GCN-NEXT:    v_lshl_b32_e32 v0, v1, v0
+; GCN-NEXT:    v_lshl_b32_e32 v1, v2, v3
 ; GCN-NEXT:    v_and_b32_e32 v0, s0, v0
 ; GCN-NEXT:    v_lshlrev_b32_e32 v1, 16, v1
 ; GCN-NEXT:    v_or_b32_e32 v0, v0, v1
 ; GCN-NEXT:    buffer_store_dword v0, off, s[4:7], 0
 ; GCN-NEXT:    s_endpgm
 ;
 ; EG-LABEL: shl_v2i16:
 ; EG:       ; %bb.0:

 ; GCN-NEXT:    s_waitcnt vmcnt(1)
 ; GCN-NEXT:    v_lshrrev_b32_e32 v6, 16, v2
 ; GCN-NEXT:    s_waitcnt vmcnt(0)
 ; GCN-NEXT:    v_and_b32_e32 v8, s8, v4
 ; GCN-NEXT:    v_lshrrev_b32_e32 v4, 16, v4
 ; GCN-NEXT:    v_and_b32_e32 v9, s8, v5
 ; GCN-NEXT:    v_lshrrev_b32_e32 v7, 16, v3
 ; GCN-NEXT:    v_lshrrev_b32_e32 v5, 16, v5
-; GCN-NEXT:    v_lshlrev_b32_e32 v5, v5, v7
-; GCN-NEXT:    v_lshlrev_b32_e32 v3, v9, v3
-; GCN-NEXT:    v_lshlrev_b32_e32 v4, v4, v6
-; GCN-NEXT:    v_lshlrev_b32_e32 v2, v8, v2
+; GCN-NEXT:    v_lshl_b32_e32 v5, v7, v5
+; GCN-NEXT:    v_lshl_b32_e32 v3, v3, v9
+; GCN-NEXT:    v_lshl_b32_e32 v4, v6, v4
+; GCN-NEXT:    v_lshl_b32_e32 v2, v2, v8
 ; GCN-NEXT:    v_lshlrev_b32_e32 v5, 16, v5
 ; GCN-NEXT:    v_and_b32_e32 v3, s8, v3
 ; GCN-NEXT:    v_lshlrev_b32_e32 v4, 16, v4
 ; GCN-NEXT:    v_and_b32_e32 v2, s8, v2
 ; GCN-NEXT:    v_or_b32_e32 v3, v3, v5
 ; GCN-NEXT:    v_or_b32_e32 v2, v2, v4
 ; GCN-NEXT:    buffer_store_dwordx2 v[2:3], v[0:1], s[0:3], 0 addr64
 ; GCN-NEXT:    s_endpgm

llvm/test/CodeGen/AMDGPU/shl.v2i16.ll

 ; CI-NEXT:    buffer_load_dword v3, v[0:1], s[4:7], 0 addr64 offset:4
 ; CI-NEXT:    s_mov_b32 s8, 0xffff
 ; CI-NEXT:    s_mov_b64 s[2:3], s[6:7]
 ; CI-NEXT:    s_waitcnt vmcnt(1)
 ; CI-NEXT:    v_lshrrev_b32_e32 v4, 16, v2
 ; CI-NEXT:    s_waitcnt vmcnt(0)
 ; CI-NEXT:    v_and_b32_e32 v5, s8, v3
 ; CI-NEXT:    v_lshrrev_b32_e32 v3, 16, v3
-; CI-NEXT:    v_lshlrev_b32_e32 v3, v3, v4
-; CI-NEXT:    v_lshlrev_b32_e32 v2, v5, v2
+; CI-NEXT:    v_lshl_b32_e32 v3, v4, v3
+; CI-NEXT:    v_lshl_b32_e32 v2, v2, v5
 ; CI-NEXT:    v_lshlrev_b32_e32 v3, 16, v3
 ; CI-NEXT:    v_and_b32_e32 v2, s8, v2
 ; CI-NEXT:    v_or_b32_e32 v2, v2, v3
 ; CI-NEXT:    buffer_store_dword v2, v[0:1], s[0:3], 0 addr64
 ; CI-NEXT:    s_endpgm
   %tid = call i32 @llvm.amdgcn.workitem.id.x()
   %tid.ext = sext i32 %tid to i64
   %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext

 ; CI-NEXT:    s_waitcnt vmcnt(1)
 ; CI-NEXT:    v_lshrrev_b32_e32 v6, 16, v2
 ; CI-NEXT:    s_waitcnt vmcnt(0)
 ; CI-NEXT:    v_and_b32_e32 v8, s8, v4
 ; CI-NEXT:    v_lshrrev_b32_e32 v4, 16, v4
 ; CI-NEXT:    v_and_b32_e32 v9, s8, v5
 ; CI-NEXT:    v_lshrrev_b32_e32 v7, 16, v3
 ; CI-NEXT:    v_lshrrev_b32_e32 v5, 16, v5
-; CI-NEXT:    v_lshlrev_b32_e32 v5, v5, v7
-; CI-NEXT:    v_lshlrev_b32_e32 v3, v9, v3
-; CI-NEXT:    v_lshlrev_b32_e32 v4, v4, v6
-; CI-NEXT:    v_lshlrev_b32_e32 v2, v8, v2
+; CI-NEXT:    v_lshl_b32_e32 v5, v7, v5
+; CI-NEXT:    v_lshl_b32_e32 v3, v3, v9
+; CI-NEXT:    v_lshl_b32_e32 v4, v6, v4
+; CI-NEXT:    v_lshl_b32_e32 v2, v2, v8
 ; CI-NEXT:    v_lshlrev_b32_e32 v5, 16, v5
 ; CI-NEXT:    v_and_b32_e32 v3, s8, v3
 ; CI-NEXT:    v_lshlrev_b32_e32 v4, 16, v4
 ; CI-NEXT:    v_and_b32_e32 v2, s8, v2
 ; CI-NEXT:    v_or_b32_e32 v3, v3, v5
 ; CI-NEXT:    v_or_b32_e32 v2, v2, v4
 ; CI-NEXT:    buffer_store_dwordx2 v[2:3], v[0:1], s[0:3], 0 addr64
 ; CI-NEXT:    s_endpgm