[llvm] 1159c67 - AMDGPU: Drop and auto-upgrade llvm.amdgcn.ldexp to llvm.ldexp

Matt Arsenault via llvm-commits llvm-commits at lists.llvm.org
Fri Jun 16 15:06:32 PDT 2023


Author: Matt Arsenault
Date: 2023-06-16T18:06:27-04:00
New Revision: 1159c670d40e3ef302264c681fe7e0268a550874

URL: https://github.com/llvm/llvm-project/commit/1159c670d40e3ef302264c681fe7e0268a550874
DIFF: https://github.com/llvm/llvm-project/commit/1159c670d40e3ef302264c681fe7e0268a550874.diff

LOG: AMDGPU: Drop and auto-upgrade llvm.amdgcn.ldexp to llvm.ldexp

Added: 
    llvm/test/Bitcode/amdgcn-ldexp.ll

Modified: 
    llvm/include/llvm/IR/IntrinsicsAMDGPU.td
    llvm/lib/IR/AutoUpgrade.cpp
    llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
    llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
    llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    llvm/test/CodeGen/AMDGPU/known-never-snan.ll

Removed: 
    llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.f16.ll
    llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.ll


################################################################################
diff  --git a/llvm/include/llvm/IR/IntrinsicsAMDGPU.td b/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
index 8c0f25b088787..969956fbf9f5e 100644
--- a/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
+++ b/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
@@ -362,12 +362,6 @@ def int_amdgcn_rsq_legacy :  ClangBuiltin<"__builtin_amdgcn_rsq_legacy">,
 def int_amdgcn_rsq_clamp : DefaultAttrsIntrinsic<
   [llvm_anyfloat_ty], [LLVMMatchType<0>], [IntrNoMem, IntrSpeculatable]>;
 
-// For int_amdgcn_ldexp_f16, only the low 16 bits of the i32 src1 operand will used.
-def int_amdgcn_ldexp : DefaultAttrsIntrinsic<
-  [llvm_anyfloat_ty], [LLVMMatchType<0>, llvm_i32_ty],
-  [IntrNoMem, IntrSpeculatable]
->;
-
 def int_amdgcn_frexp_mant : DefaultAttrsIntrinsic<
   [llvm_anyfloat_ty], [LLVMMatchType<0>], [IntrNoMem, IntrSpeculatable]
 >;

diff  --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index 19e69ef1a89fb..4dc578b74f460 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -836,6 +836,13 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
                                         {F->getReturnType()});
       return true;
     }
+    if (Name.startswith("amdgcn.ldexp")) {
+      // Target specific intrinsic became redundant
+      NewFn = Intrinsic::getDeclaration(
+          F->getParent(), Intrinsic::ldexp,
+          {F->getReturnType(), F->getArg(1)->getType()});
+      return true;
+    }
 
     break;
   }

diff  --git a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
index a09604fa1872f..d298f5b714ee2 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
@@ -3220,8 +3220,7 @@ SDValue AMDGPUTargetLowering::performIntrinsicWOChainCombine(
   case Intrinsic::amdgcn_rsq:
   case Intrinsic::amdgcn_rcp_legacy:
   case Intrinsic::amdgcn_rsq_legacy:
-  case Intrinsic::amdgcn_rsq_clamp:
-  case Intrinsic::amdgcn_ldexp: {
+  case Intrinsic::amdgcn_rsq_clamp: {
     // FIXME: This is probably wrong. If src is an sNaN, it won't be quieted
     SDValue Src = N->getOperand(1);
     return Src.isUndef() ? Src : SDValue();

diff  --git a/llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp b/llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
index b3bb61d8764a6..a7f5d61585b63 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
@@ -996,50 +996,6 @@ GCNTTIImpl::instCombineIntrinsic(InstCombiner &IC, IntrinsicInst &II) const {
 
     break;
   }
-  case Intrinsic::amdgcn_ldexp: {
-    // FIXME: This doesn't introduce new instructions and belongs in
-    // InstructionSimplify.
-    Type *Ty = II.getType();
-    Value *Op0 = II.getArgOperand(0);
-    Value *Op1 = II.getArgOperand(1);
-
-    // Folding undef to qnan is safe regardless of the FP mode.
-    if (isa<UndefValue>(Op0)) {
-      auto *QNaN = ConstantFP::get(Ty, APFloat::getQNaN(Ty->getFltSemantics()));
-      return IC.replaceInstUsesWith(II, QNaN);
-    }
-
-    const APFloat *C = nullptr;
-    match(Op0, PatternMatch::m_APFloat(C));
-
-    // FIXME: Should flush denorms depending on FP mode, but that's ignored
-    // everywhere else.
-    //
-    // These cases should be safe, even with strictfp.
-    // ldexp(0.0, x) -> 0.0
-    // ldexp(-0.0, x) -> -0.0
-    // ldexp(inf, x) -> inf
-    // ldexp(-inf, x) -> -inf
-    if (C && (C->isZero() || C->isInfinity())) {
-      return IC.replaceInstUsesWith(II, Op0);
-    }
-
-    // With strictfp, be more careful about possibly needing to flush denormals
-    // or not, and snan behavior depends on ieee_mode.
-    if (II.isStrictFP())
-      break;
-
-    if (C && C->isNaN())
-      return IC.replaceInstUsesWith(II, ConstantFP::get(Ty, C->makeQuiet()));
-
-    // ldexp(x, 0) -> x
-    // ldexp(x, undef) -> x
-    if (isa<UndefValue>(Op1) || match(Op1, PatternMatch::m_ZeroInt())) {
-      return IC.replaceInstUsesWith(II, Op0);
-    }
-
-    break;
-  }
   case Intrinsic::amdgcn_fmul_legacy: {
     Value *Op0 = II.getArgOperand(0);
     Value *Op1 = II.getArgOperand(1);

diff  --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index ab7a543ed5fef..a79d72f5c14b1 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -7223,9 +7223,6 @@ SDValue SITargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
 
     return emitRemovedIntrinsicError(DAG, DL, VT);
   }
-  case Intrinsic::amdgcn_ldexp:
-    return DAG.getNode(ISD::FLDEXP, DL, VT, Op.getOperand(1), Op.getOperand(2));
-
   case Intrinsic::amdgcn_fract:
     return DAG.getNode(AMDGPUISD::FRACT, DL, VT, Op.getOperand(1));
 
@@ -10672,7 +10669,6 @@ bool SITargetLowering::isCanonicalized(Register Reg, MachineFunction &MF,
     case Intrinsic::amdgcn_div_fmas:
     case Intrinsic::amdgcn_div_fixup:
     case Intrinsic::amdgcn_fract:
-    case Intrinsic::amdgcn_ldexp:
     case Intrinsic::amdgcn_cvt_pkrtz:
     case Intrinsic::amdgcn_cubeid:
     case Intrinsic::amdgcn_cubema:

diff  --git a/llvm/test/Bitcode/amdgcn-ldexp.ll b/llvm/test/Bitcode/amdgcn-ldexp.ll
new file mode 100644
index 0000000000000..0ba901af5c758
--- /dev/null
+++ b/llvm/test/Bitcode/amdgcn-ldexp.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | llvm-dis | FileCheck %s
+
+define float @f32(float %a, i32 %b) {
+  ; CHECK: %call = call float @llvm.ldexp.f32.i32(float %a, i32 %b)
+  ; CHECK-NOT: amdgcn.ldexp
+  %call = call float @llvm.amdgcn.ldexp.f32(float %a, i32 %b)
+  ret float %call
+}
+
+define double @f64(double %a, i32 %b) {
+  ; CHECK: %call = call double @llvm.ldexp.f64.i32(double %a, i32 %b)
+  ; CHECK-NOT: amdgcn.ldexp
+  %call = call double @llvm.amdgcn.ldexp.f64(double %a, i32 %b)
+  ret double %call
+}
+
+define half @f16(half %a, i32 %b) {
+  ; CHECK: %call = call half @llvm.ldexp.f16.i32(half %a, i32 %b)
+  ; CHECK-NOT: amdgcn.ldexp
+  %call = call half @llvm.amdgcn.ldexp.f16(half %a, i32 %b)
+  ret half %call
+}
+
+declare half @llvm.amdgcn.ldexp.f16(half, i32)
+declare float @llvm.amdgcn.ldexp.f32(float, i32)
+declare double @llvm.amdgcn.ldexp.f64(double, i32)
+; CHECK: declare half @llvm.ldexp.f16.i32(half, i32)
+; CHECK: declare float @llvm.ldexp.f32.i32(float, i32)
+; CHECK: declare double @llvm.ldexp.f64.i32(double, i32)
+; CHECK-NOT: amdgcn.ldexp

diff  --git a/llvm/test/CodeGen/AMDGPU/known-never-snan.ll b/llvm/test/CodeGen/AMDGPU/known-never-snan.ll
index 5ee6eda85f0ad..cb544732431a6 100644
--- a/llvm/test/CodeGen/AMDGPU/known-never-snan.ll
+++ b/llvm/test/CodeGen/AMDGPU/known-never-snan.ll
@@ -516,7 +516,7 @@ define float @v_test_known_not_snan_ldexp_input_fmed3_r_i_i_f32(float %a, i32 %b
 ; GCN-NEXT:    v_ldexp_f32 v0, v0, v1
 ; GCN-NEXT:    v_med3_f32 v0, v0, 2.0, 4.0
 ; GCN-NEXT:    s_setpc_b64 s[30:31]
-  %known.not.snan = call float @llvm.amdgcn.ldexp.f32(float %a, i32 %b)
+  %known.not.snan = call float @llvm.ldexp.f32.i32(float %a, i32 %b)
   %max = call float @llvm.maxnum.f32(float %known.not.snan, float 2.0)
   %med = call float @llvm.minnum.f32(float %max, float 4.0)
   ret float %med
@@ -658,7 +658,7 @@ declare float @llvm.maxnum.f32(float, float) #1
 declare float @llvm.copysign.f32(float, float) #1
 declare float @llvm.fma.f32(float, float, float) #1
 declare float @llvm.fmuladd.f32(float, float, float) #1
-declare float @llvm.amdgcn.ldexp.f32(float, i32) #1
+declare float @llvm.ldexp.f32.i32(float, i32) #1
 declare float @llvm.amdgcn.fmul.legacy(float, float) #1
 declare float @llvm.amdgcn.fmed3.f32(float, float, float) #1
 declare float @llvm.amdgcn.frexp.mant.f32(float) #1

diff  --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.f16.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.f16.ll
deleted file mode 100644
index 595dffe23c427..0000000000000
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.f16.ll
+++ /dev/null
@@ -1,230 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN:  llc -amdgpu-scalarize-global-loads=false  -march=amdgcn -mcpu=fiji -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefixes=VI %s
-; RUN:  llc -amdgpu-scalarize-global-loads=false  -march=amdgcn -mcpu=gfx1010 -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX10 %s
-; RUN:  llc -amdgpu-scalarize-global-loads=false  -march=amdgcn -mcpu=gfx1100 -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX11 %s
-
-declare half @llvm.amdgcn.ldexp.f16(half %a, i32 %b)
-
-define amdgpu_kernel void @ldexp_f16(
-; VI-LABEL: ldexp_f16:
-; VI:       ; %bb.0:
-; VI-NEXT:    s_load_dwordx4 s[4:7], s[0:1], 0x24
-; VI-NEXT:    s_load_dwordx2 s[8:9], s[0:1], 0x34
-; VI-NEXT:    s_mov_b32 s3, 0xf000
-; VI-NEXT:    s_mov_b32 s2, -1
-; VI-NEXT:    s_mov_b32 s10, s2
-; VI-NEXT:    s_mov_b32 s11, s3
-; VI-NEXT:    s_waitcnt lgkmcnt(0)
-; VI-NEXT:    s_mov_b32 s12, s6
-; VI-NEXT:    s_mov_b32 s13, s7
-; VI-NEXT:    s_mov_b32 s14, s2
-; VI-NEXT:    s_mov_b32 s15, s3
-; VI-NEXT:    buffer_load_dword v0, off, s[8:11], 0
-; VI-NEXT:    buffer_load_ushort v1, off, s[12:15], 0
-; VI-NEXT:    s_mov_b32 s0, s4
-; VI-NEXT:    s_movk_i32 s4, 0x8000
-; VI-NEXT:    v_mov_b32_e32 v2, 0x7fff
-; VI-NEXT:    s_mov_b32 s1, s5
-; VI-NEXT:    s_waitcnt vmcnt(1)
-; VI-NEXT:    v_med3_i32 v0, v0, s4, v2
-; VI-NEXT:    s_waitcnt vmcnt(0)
-; VI-NEXT:    v_ldexp_f16_e32 v0, v1, v0
-; VI-NEXT:    buffer_store_short v0, off, s[0:3], 0
-; VI-NEXT:    s_endpgm
-;
-; GFX10-LABEL: ldexp_f16:
-; GFX10:       ; %bb.0:
-; GFX10-NEXT:    s_clause 0x1
-; GFX10-NEXT:    s_load_dwordx4 s[4:7], s[0:1], 0x24
-; GFX10-NEXT:    s_load_dwordx2 s[8:9], s[0:1], 0x34
-; GFX10-NEXT:    s_mov_b32 s2, -1
-; GFX10-NEXT:    s_mov_b32 s3, 0x31016000
-; GFX10-NEXT:    s_mov_b32 s10, s2
-; GFX10-NEXT:    s_mov_b32 s11, s3
-; GFX10-NEXT:    s_mov_b32 s14, s2
-; GFX10-NEXT:    s_mov_b32 s15, s3
-; GFX10-NEXT:    s_movk_i32 s0, 0x8000
-; GFX10-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX10-NEXT:    s_mov_b32 s12, s6
-; GFX10-NEXT:    buffer_load_dword v0, off, s[8:11], 0
-; GFX10-NEXT:    s_mov_b32 s13, s7
-; GFX10-NEXT:    s_mov_b32 s1, s5
-; GFX10-NEXT:    buffer_load_ushort v1, off, s[12:15], 0
-; GFX10-NEXT:    s_waitcnt vmcnt(1)
-; GFX10-NEXT:    v_med3_i32 v0, v0, s0, 0x7fff
-; GFX10-NEXT:    s_mov_b32 s0, s4
-; GFX10-NEXT:    s_waitcnt vmcnt(0)
-; GFX10-NEXT:    v_ldexp_f16_e32 v0, v1, v0
-; GFX10-NEXT:    buffer_store_short v0, off, s[0:3], 0
-; GFX10-NEXT:    s_endpgm
-;
-; GFX11-LABEL: ldexp_f16:
-; GFX11:       ; %bb.0:
-; GFX11-NEXT:    s_clause 0x1
-; GFX11-NEXT:    s_load_b128 s[4:7], s[0:1], 0x24
-; GFX11-NEXT:    s_load_b64 s[0:1], s[0:1], 0x34
-; GFX11-NEXT:    s_mov_b32 s10, -1
-; GFX11-NEXT:    s_mov_b32 s11, 0x31016000
-; GFX11-NEXT:    s_mov_b32 s2, s10
-; GFX11-NEXT:    s_mov_b32 s3, s11
-; GFX11-NEXT:    s_mov_b32 s14, s10
-; GFX11-NEXT:    s_mov_b32 s15, s11
-; GFX11-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX11-NEXT:    s_mov_b32 s12, s6
-; GFX11-NEXT:    buffer_load_b32 v0, off, s[0:3], 0
-; GFX11-NEXT:    s_mov_b32 s13, s7
-; GFX11-NEXT:    s_movk_i32 s0, 0x8000
-; GFX11-NEXT:    buffer_load_u16 v1, off, s[12:15], 0
-; GFX11-NEXT:    s_mov_b32 s8, s4
-; GFX11-NEXT:    s_mov_b32 s9, s5
-; GFX11-NEXT:    s_waitcnt vmcnt(1)
-; GFX11-NEXT:    v_med3_i32 v0, v0, s0, 0x7fff
-; GFX11-NEXT:    s_waitcnt vmcnt(0)
-; GFX11-NEXT:    s_delay_alu instid0(VALU_DEP_1)
-; GFX11-NEXT:    v_ldexp_f16_e32 v0, v1, v0
-; GFX11-NEXT:    buffer_store_b16 v0, off, s[8:11], 0
-; GFX11-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
-; GFX11-NEXT:    s_endpgm
-    ptr addrspace(1) %r,
-    ptr addrspace(1) %a,
-    ptr addrspace(1) %b) {
-  %a.val = load half, ptr addrspace(1) %a
-  %b.val = load i32, ptr addrspace(1) %b
-  %r.val = call half @llvm.amdgcn.ldexp.f16(half %a.val, i32 %b.val)
-  store half %r.val, ptr addrspace(1) %r
-  ret void
-}
-
-define amdgpu_kernel void @ldexp_f16_imm_a(
-; VI-LABEL: ldexp_f16_imm_a:
-; VI:       ; %bb.0:
-; VI-NEXT:    s_load_dwordx4 s[0:3], s[0:1], 0x24
-; VI-NEXT:    s_mov_b32 s7, 0xf000
-; VI-NEXT:    s_mov_b32 s6, -1
-; VI-NEXT:    s_mov_b32 s10, s6
-; VI-NEXT:    s_mov_b32 s11, s7
-; VI-NEXT:    s_waitcnt lgkmcnt(0)
-; VI-NEXT:    s_mov_b32 s8, s2
-; VI-NEXT:    s_mov_b32 s9, s3
-; VI-NEXT:    buffer_load_dword v0, off, s[8:11], 0
-; VI-NEXT:    s_mov_b32 s4, s0
-; VI-NEXT:    s_movk_i32 s0, 0x8000
-; VI-NEXT:    v_mov_b32_e32 v1, 0x7fff
-; VI-NEXT:    s_mov_b32 s5, s1
-; VI-NEXT:    s_waitcnt vmcnt(0)
-; VI-NEXT:    v_med3_i32 v0, v0, s0, v1
-; VI-NEXT:    v_ldexp_f16_e32 v0, 2.0, v0
-; VI-NEXT:    buffer_store_short v0, off, s[4:7], 0
-; VI-NEXT:    s_endpgm
-;
-; GFX10-LABEL: ldexp_f16_imm_a:
-; GFX10:       ; %bb.0:
-; GFX10-NEXT:    s_load_dwordx4 s[0:3], s[0:1], 0x24
-; GFX10-NEXT:    s_mov_b32 s6, -1
-; GFX10-NEXT:    s_mov_b32 s7, 0x31016000
-; GFX10-NEXT:    s_mov_b32 s10, s6
-; GFX10-NEXT:    s_mov_b32 s11, s7
-; GFX10-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX10-NEXT:    s_mov_b32 s8, s2
-; GFX10-NEXT:    s_mov_b32 s9, s3
-; GFX10-NEXT:    s_movk_i32 s2, 0x8000
-; GFX10-NEXT:    buffer_load_dword v0, off, s[8:11], 0
-; GFX10-NEXT:    s_mov_b32 s4, s0
-; GFX10-NEXT:    s_mov_b32 s5, s1
-; GFX10-NEXT:    s_waitcnt vmcnt(0)
-; GFX10-NEXT:    v_med3_i32 v0, v0, s2, 0x7fff
-; GFX10-NEXT:    v_ldexp_f16_e32 v0, 2.0, v0
-; GFX10-NEXT:    buffer_store_short v0, off, s[4:7], 0
-; GFX10-NEXT:    s_endpgm
-;
-; GFX11-LABEL: ldexp_f16_imm_a:
-; GFX11:       ; %bb.0:
-; GFX11-NEXT:    s_load_b128 s[0:3], s[0:1], 0x24
-; GFX11-NEXT:    s_mov_b32 s6, -1
-; GFX11-NEXT:    s_mov_b32 s7, 0x31016000
-; GFX11-NEXT:    s_mov_b32 s10, s6
-; GFX11-NEXT:    s_mov_b32 s11, s7
-; GFX11-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX11-NEXT:    s_mov_b32 s8, s2
-; GFX11-NEXT:    s_mov_b32 s9, s3
-; GFX11-NEXT:    s_movk_i32 s2, 0x8000
-; GFX11-NEXT:    buffer_load_b32 v0, off, s[8:11], 0
-; GFX11-NEXT:    s_mov_b32 s4, s0
-; GFX11-NEXT:    s_mov_b32 s5, s1
-; GFX11-NEXT:    s_waitcnt vmcnt(0)
-; GFX11-NEXT:    v_med3_i32 v0, v0, s2, 0x7fff
-; GFX11-NEXT:    s_delay_alu instid0(VALU_DEP_1)
-; GFX11-NEXT:    v_ldexp_f16_e32 v0, 2.0, v0
-; GFX11-NEXT:    buffer_store_b16 v0, off, s[4:7], 0
-; GFX11-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
-; GFX11-NEXT:    s_endpgm
-    ptr addrspace(1) %r,
-    ptr addrspace(1) %b) {
-  %b.val = load i32, ptr addrspace(1) %b
-  %r.val = call half @llvm.amdgcn.ldexp.f16(half 2.0, i32 %b.val)
-  store half %r.val, ptr addrspace(1) %r
-  ret void
-}
-
-define amdgpu_kernel void @ldexp_f16_imm_b(
-; VI-LABEL: ldexp_f16_imm_b:
-; VI:       ; %bb.0:
-; VI-NEXT:    s_load_dwordx4 s[0:3], s[0:1], 0x24
-; VI-NEXT:    s_mov_b32 s7, 0xf000
-; VI-NEXT:    s_mov_b32 s6, -1
-; VI-NEXT:    s_mov_b32 s10, s6
-; VI-NEXT:    s_mov_b32 s11, s7
-; VI-NEXT:    s_waitcnt lgkmcnt(0)
-; VI-NEXT:    s_mov_b32 s8, s2
-; VI-NEXT:    s_mov_b32 s9, s3
-; VI-NEXT:    buffer_load_ushort v0, off, s[8:11], 0
-; VI-NEXT:    s_mov_b32 s4, s0
-; VI-NEXT:    s_mov_b32 s5, s1
-; VI-NEXT:    s_waitcnt vmcnt(0)
-; VI-NEXT:    v_ldexp_f16_e64 v0, v0, 2
-; VI-NEXT:    buffer_store_short v0, off, s[4:7], 0
-; VI-NEXT:    s_endpgm
-;
-; GFX10-LABEL: ldexp_f16_imm_b:
-; GFX10:       ; %bb.0:
-; GFX10-NEXT:    s_load_dwordx4 s[0:3], s[0:1], 0x24
-; GFX10-NEXT:    s_mov_b32 s6, -1
-; GFX10-NEXT:    s_mov_b32 s7, 0x31016000
-; GFX10-NEXT:    s_mov_b32 s10, s6
-; GFX10-NEXT:    s_mov_b32 s11, s7
-; GFX10-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX10-NEXT:    s_mov_b32 s8, s2
-; GFX10-NEXT:    s_mov_b32 s9, s3
-; GFX10-NEXT:    s_mov_b32 s4, s0
-; GFX10-NEXT:    buffer_load_ushort v0, off, s[8:11], 0
-; GFX10-NEXT:    s_mov_b32 s5, s1
-; GFX10-NEXT:    s_waitcnt vmcnt(0)
-; GFX10-NEXT:    v_ldexp_f16_e64 v0, v0, 2
-; GFX10-NEXT:    buffer_store_short v0, off, s[4:7], 0
-; GFX10-NEXT:    s_endpgm
-;
-; GFX11-LABEL: ldexp_f16_imm_b:
-; GFX11:       ; %bb.0:
-; GFX11-NEXT:    s_load_b128 s[0:3], s[0:1], 0x24
-; GFX11-NEXT:    s_mov_b32 s6, -1
-; GFX11-NEXT:    s_mov_b32 s7, 0x31016000
-; GFX11-NEXT:    s_mov_b32 s10, s6
-; GFX11-NEXT:    s_mov_b32 s11, s7
-; GFX11-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX11-NEXT:    s_mov_b32 s8, s2
-; GFX11-NEXT:    s_mov_b32 s9, s3
-; GFX11-NEXT:    s_mov_b32 s4, s0
-; GFX11-NEXT:    buffer_load_u16 v0, off, s[8:11], 0
-; GFX11-NEXT:    s_mov_b32 s5, s1
-; GFX11-NEXT:    s_waitcnt vmcnt(0)
-; GFX11-NEXT:    v_ldexp_f16_e64 v0, v0, 2
-; GFX11-NEXT:    buffer_store_b16 v0, off, s[4:7], 0
-; GFX11-NEXT:    s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
-; GFX11-NEXT:    s_endpgm
-    ptr addrspace(1) %r,
-    ptr addrspace(1) %a) {
-  %a.val = load half, ptr addrspace(1) %a
-  %r.val = call half @llvm.amdgcn.ldexp.f16(half %a.val, i32 2)
-  store half %r.val, ptr addrspace(1) %r
-  ret void
-}

diff  --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.ll
deleted file mode 100644
index d4282061a3fce..0000000000000
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ldexp.ll
+++ /dev/null
@@ -1,31 +0,0 @@
-; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
-; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
-
-declare float @llvm.amdgcn.ldexp.f32(float, i32) nounwind readnone
-declare double @llvm.amdgcn.ldexp.f64(double, i32) nounwind readnone
-
-; SI-LABEL: {{^}}test_ldexp_f32:
-; SI: v_ldexp_f32
-; SI: s_endpgm
-define amdgpu_kernel void @test_ldexp_f32(ptr addrspace(1) %out, float %a, i32 %b) nounwind {
-  %result = call float @llvm.amdgcn.ldexp.f32(float %a, i32 %b) nounwind readnone
-  store float %result, ptr addrspace(1) %out, align 4
-  ret void
-}
-
-; SI-LABEL: {{^}}test_ldexp_f64:
-; SI: v_ldexp_f64
-; SI: s_endpgm
-define amdgpu_kernel void @test_ldexp_f64(ptr addrspace(1) %out, double %a, i32 %b) nounwind {
-  %result = call double @llvm.amdgcn.ldexp.f64(double %a, i32 %b) nounwind readnone
-  store double %result, ptr addrspace(1) %out, align 8
-  ret void
-}
-
-; SI-LABEL: {{^}}test_ldexp_undef_f32:
-; SI-NOT: v_ldexp_f32
-define amdgpu_kernel void @test_ldexp_undef_f32(ptr addrspace(1) %out, i32 %b) nounwind {
-  %result = call float @llvm.amdgcn.ldexp.f32(float undef, i32 %b) nounwind readnone
-  store float %result, ptr addrspace(1) %out, align 4
-  ret void
-}


        


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