[flang-commits] [flang] 3fe8ec7 - Revert "[mlir][Arith] Add arith.is_nan and arith.is_inf predicates"

Krzysztof Drewniak via flang-commits flang-commits at lists.llvm.org
Thu Aug 10 07:13:32 PDT 2023


Author: Krzysztof Drewniak
Date: 2023-08-10T14:13:25Z
New Revision: 3fe8ec7906a89dadb8bce45d9de1f4921da52864

URL: https://github.com/llvm/llvm-project/commit/3fe8ec7906a89dadb8bce45d9de1f4921da52864
DIFF: https://github.com/llvm/llvm-project/commit/3fe8ec7906a89dadb8bce45d9de1f4921da52864.diff

LOG: Revert "[mlir][Arith] Add arith.is_nan and arith.is_inf predicates"

This reverts commit 7c349c369847dc2f1736efb9c90d03521cd44a90.

Per discussion at
https://reviews.llvm.org/rG7c349c369847dc2f1736efb9c90d03521cd44a90
and elsewhere, the lowering to LLVM defined here isn't what it should
be and the fastmath flag usage isn't correct, so `arith.is_nan` and
`arith.is_inf` cannot exist in their current form.

It's unclear if those operations should be introduced in the future,
since they make the dialect more complex and don't add any expressive
power. Further discussion may be moved to an RFC (or I'll drop this
patch).

Differential Revision: https://reviews.llvm.org/D157543

Added: 
    

Modified: 
    flang/test/Lower/Intrinsics/ieee_class_queries.f90
    flang/test/Lower/Intrinsics/ieee_is_finite.f90
    flang/test/Lower/Intrinsics/ieee_is_normal.f90
    flang/test/Lower/Intrinsics/ieee_unordered.f90
    flang/test/Lower/Intrinsics/isnan.f90
    mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
    mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
    mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
    mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
    mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
    mlir/lib/Dialect/Arith/IR/ArithOps.cpp
    mlir/lib/Dialect/Arith/Transforms/ExpandOps.cpp
    mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir
    mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir
    mlir/test/Dialect/Arith/canonicalize.mlir
    mlir/test/Dialect/Arith/expand-ops.mlir
    mlir/test/Dialect/Arith/ops.mlir
    mlir/test/Target/LLVMIR/Import/intrinsic.ll
    mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir

Removed: 
    


################################################################################
diff  --git a/flang/test/Lower/Intrinsics/ieee_class_queries.f90 b/flang/test/Lower/Intrinsics/ieee_class_queries.f90
index 137ab23e5de37a..bb7787ea903e23 100644
--- a/flang/test/Lower/Intrinsics/ieee_class_queries.f90
+++ b/flang/test/Lower/Intrinsics/ieee_class_queries.f90
@@ -10,38 +10,38 @@
   real(10) :: x10 = -10.0
   real(16) :: x16 = -16.0
 
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 60 : i32}> : (f16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 504 : i32}> : (f16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 60 : i32}> : (f16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f16) -> i1
   print*, ieee_is_finite(x2), ieee_is_negative(x2), ieee_is_normal(x2), &
           ieee_is_nan(x2)
 
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (bf16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 60 : i32}> : (bf16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (bf16) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (bf16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 504 : i32}> : (bf16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 60 : i32}> : (bf16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (bf16) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (bf16) -> i1
   print*, ieee_is_finite(x3), ieee_is_negative(x3), ieee_is_normal(x3), &
           ieee_is_nan(x3)
 
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f32) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 60 : i32}> : (f32) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f32) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f32) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 504 : i32}> : (f32) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 60 : i32}> : (f32) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f32) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f32) -> i1
   print*, ieee_is_finite(x4), ieee_is_negative(x4), ieee_is_normal(x4), &
           ieee_is_nan(x4)
 
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f64) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 60 : i32}> : (f64) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f64) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f64) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 504 : i32}> : (f64) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 60 : i32}> : (f64) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f64) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f64) -> i1
   print*, ieee_is_finite(x8), ieee_is_negative(x8), ieee_is_normal(x8), &
           ieee_is_nan(x8)
 
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f128) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 60 : i32}> : (f128) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f128) -> i1
-  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 504 : i32}> : (f128) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 60 : i32}> : (f128) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f128) -> i1
+  ! CHECK:     "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f128) -> i1
   print*, ieee_is_finite(x16), ieee_is_negative(x16), ieee_is_normal(x16), &
           ieee_is_nan(x16)
 

diff  --git a/flang/test/Lower/Intrinsics/ieee_is_finite.f90 b/flang/test/Lower/Intrinsics/ieee_is_finite.f90
index 19b5980c0956d2..db226c0d0a5ce7 100644
--- a/flang/test/Lower/Intrinsics/ieee_is_finite.f90
+++ b/flang/test/Lower/Intrinsics/ieee_is_finite.f90
@@ -7,7 +7,7 @@ subroutine is_finite_test(x, y)
   real(8) y
 
   ! CHECK:     %[[V_3:[0-9]+]] = fir.load %arg0 : !fir.ref<f32>
-  ! CHECK:     %[[V_4:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_3]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f32) -> i1
+  ! CHECK:     %[[V_4:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_3]]) <{bit = 504 : i32}> : (f32) -> i1
   ! CHECK:     %[[V_5:[0-9]+]] = fir.convert %[[V_4]] : (i1) -> !fir.logical<4>
   ! CHECK:     %[[V_6:[0-9]+]] = fir.convert %[[V_5]] : (!fir.logical<4>) -> i1
   ! CHECK:     %[[V_7:[0-9]+]] = fir.call @_FortranAioOutputLogical(%{{.*}}, %[[V_6]]) {{.*}} : (!fir.ref<i8>, i1) -> i1
@@ -16,14 +16,14 @@ subroutine is_finite_test(x, y)
   ! CHECK:     %[[V_12:[0-9]+]] = fir.load %arg0 : !fir.ref<f32>
   ! CHECK:     %[[V_13:[0-9]+]] = fir.load %arg0 : !fir.ref<f32>
   ! CHECK:     %[[V_14:[0-9]+]] = arith.addf %[[V_12]], %[[V_13]] {{.*}} : f32
-  ! CHECK:     %[[V_15:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_14]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f32) -> i1
+  ! CHECK:     %[[V_15:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_14]]) <{bit = 504 : i32}> : (f32) -> i1
   ! CHECK:     %[[V_16:[0-9]+]] = fir.convert %[[V_15]] : (i1) -> !fir.logical<4>
   ! CHECK:     %[[V_17:[0-9]+]] = fir.convert %[[V_16]] : (!fir.logical<4>) -> i1
   ! CHECK:     %[[V_18:[0-9]+]] = fir.call @_FortranAioOutputLogical(%{{.*}}, %[[V_17]]) {{.*}} : (!fir.ref<i8>, i1) -> i1
   print*, ieee_is_finite(x+x)
 
   ! CHECK:     %[[V_23:[0-9]+]] = fir.load %arg1 : !fir.ref<f64>
-  ! CHECK:     %[[V_24:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_23]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f64) -> i1
+  ! CHECK:     %[[V_24:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_23]]) <{bit = 504 : i32}> : (f64) -> i1
   ! CHECK:     %[[V_25:[0-9]+]] = fir.convert %[[V_24]] : (i1) -> !fir.logical<4>
   ! CHECK:     %[[V_26:[0-9]+]] = fir.convert %[[V_25]] : (!fir.logical<4>) -> i1
   ! CHECK:     %[[V_27:[0-9]+]] = fir.call @_FortranAioOutputLogical(%{{.*}}, %[[V_26]]) {{.*}} : (!fir.ref<i8>, i1) -> i1
@@ -32,7 +32,7 @@ subroutine is_finite_test(x, y)
   ! CHECK:     %[[V_32:[0-9]+]] = fir.load %arg1 : !fir.ref<f64>
   ! CHECK:     %[[V_33:[0-9]+]] = fir.load %arg1 : !fir.ref<f64>
   ! CHECK:     %[[V_34:[0-9]+]] = arith.addf %[[V_32]], %[[V_33]] {{.*}} : f64
-  ! CHECK:     %[[V_35:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_34]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 504 : i32}> : (f64) -> i1
+  ! CHECK:     %[[V_35:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_34]]) <{bit = 504 : i32}> : (f64) -> i1
   ! CHECK:     %[[V_36:[0-9]+]] = fir.convert %[[V_35]] : (i1) -> !fir.logical<4>
   ! CHECK:     %[[V_37:[0-9]+]] = fir.convert %[[V_36]] : (!fir.logical<4>) -> i1
   ! CHECK:     %[[V_38:[0-9]+]] = fir.call @_FortranAioOutputLogical(%{{.*}}, %[[V_37]]) {{.*}} : (!fir.ref<i8>, i1) -> i1

diff  --git a/flang/test/Lower/Intrinsics/ieee_is_normal.f90 b/flang/test/Lower/Intrinsics/ieee_is_normal.f90
index fef5b361448577..f9ab01881d250d 100644
--- a/flang/test/Lower/Intrinsics/ieee_is_normal.f90
+++ b/flang/test/Lower/Intrinsics/ieee_is_normal.f90
@@ -6,7 +6,7 @@ subroutine ieee_is_normal_f16(r)
   use ieee_arithmetic
   real(KIND=2) :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f16) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f16) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_f16
 
@@ -15,7 +15,7 @@ subroutine ieee_is_normal_bf16(r)
   use ieee_arithmetic
   real(KIND=3) :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (bf16) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (bf16) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_bf16
 
@@ -26,7 +26,7 @@ subroutine ieee_is_normal_f32(r)
   use ieee_arithmetic
   real :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f32) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f32) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_f32
 
@@ -35,7 +35,7 @@ subroutine ieee_is_normal_f64(r)
   use ieee_arithmetic
   real(KIND=8) :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f64) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f64) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_f64
 
@@ -44,7 +44,7 @@ subroutine ieee_is_normal_f80(r)
   use ieee_arithmetic
   real(KIND=10) :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f80) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f80) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_f80
 
@@ -53,6 +53,6 @@ subroutine ieee_is_normal_f128(r)
   use ieee_arithmetic
   real(KIND=16) :: r
   i = ieee_is_normal(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 360 : i32}> : (f128) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 360 : i32}> : (f128) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_normal_f128

diff  --git a/flang/test/Lower/Intrinsics/ieee_unordered.f90 b/flang/test/Lower/Intrinsics/ieee_unordered.f90
index e84738e2356099..58b827348bfe03 100644
--- a/flang/test/Lower/Intrinsics/ieee_unordered.f90
+++ b/flang/test/Lower/Intrinsics/ieee_unordered.f90
@@ -44,8 +44,8 @@
 
 ! CHECK:     %[[V_40:[0-9]+]] = fir.load %[[V_2]] : !fir.ref<f128>
 ! CHECK:     %[[V_41:[0-9]+]] = fir.load %[[V_3]] : !fir.ref<f128>
-! CHECK:     %[[V_42:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_40]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
-! CHECK:     %[[V_43:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_41]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_42:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_40]]) <{bit = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_43:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_41]]) <{bit = 3 : i32}> : (f128) -> i1
 ! CHECK:     %[[V_44:[0-9]+]] = arith.ori %[[V_42]], %[[V_43]] : i1
 ! CHECK:     %[[V_45:[0-9]+]] = fir.convert %[[V_44]] : (i1) -> !fir.logical<4>
 ! CHECK:     %[[V_46:[0-9]+]] = fir.convert %[[V_45]] : (!fir.logical<4>) -> i1
@@ -53,8 +53,8 @@
 
 ! CHECK:     %[[V_48:[0-9]+]] = fir.load %[[V_2]] : !fir.ref<f128>
 ! CHECK:     %[[V_49:[0-9]+]] = fir.load %[[V_4]] : !fir.ref<f128>
-! CHECK:     %[[V_50:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_48]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
-! CHECK:     %[[V_51:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_49]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_50:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_48]]) <{bit = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_51:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_49]]) <{bit = 3 : i32}> : (f128) -> i1
 ! CHECK:     %[[V_52:[0-9]+]] = arith.ori %[[V_50]], %[[V_51]] : i1
 ! CHECK:     %[[V_53:[0-9]+]] = fir.convert %[[V_52]] : (i1) -> !fir.logical<4>
 ! CHECK:     %[[V_54:[0-9]+]] = fir.convert %[[V_53]] : (!fir.logical<4>) -> i1
@@ -62,8 +62,8 @@
 
 ! CHECK:     %[[V_56:[0-9]+]] = fir.load %[[V_3]] : !fir.ref<f128>
 ! CHECK:     %[[V_57:[0-9]+]] = fir.load %[[V_4]] : !fir.ref<f128>
-! CHECK:     %[[V_58:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_56]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
-! CHECK:     %[[V_59:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_57]]) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_58:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_56]]) <{bit = 3 : i32}> : (f128) -> i1
+! CHECK:     %[[V_59:[0-9]+]] = "llvm.intr.is.fpclass"(%[[V_57]]) <{bit = 3 : i32}> : (f128) -> i1
 ! CHECK:     %[[V_60:[0-9]+]] = arith.ori %[[V_58]], %[[V_59]] : i1
 ! CHECK:     %[[V_61:[0-9]+]] = fir.convert %[[V_60]] : (i1) -> !fir.logical<4>
 ! CHECK:     %[[V_62:[0-9]+]] = fir.convert %[[V_61]] : (!fir.logical<4>) -> i1

diff  --git a/flang/test/Lower/Intrinsics/isnan.f90 b/flang/test/Lower/Intrinsics/isnan.f90
index 10af98e7aa9186..700b2d1a67c656 100644
--- a/flang/test/Lower/Intrinsics/isnan.f90
+++ b/flang/test/Lower/Intrinsics/isnan.f90
@@ -5,7 +5,7 @@
 subroutine isnan_f32(r)
   real :: r
   i = isnan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f32) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f32) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine isnan_f32
 
@@ -14,7 +14,7 @@ subroutine ieee_is_nan_f32(r)
   use ieee_arithmetic
   real :: r
   i = ieee_is_nan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f32) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f32) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_nan_f32
 
@@ -22,7 +22,7 @@ end subroutine ieee_is_nan_f32
 subroutine isnan_f64(r)
   real(KIND=8) :: r
   i = isnan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f64) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f64) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine isnan_f64
 
@@ -31,7 +31,7 @@ subroutine ieee_is_nan_f64(r)
   use ieee_arithmetic
   real(KIND=8) :: r
   i = ieee_is_nan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f64) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f64) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_nan_f64
 
@@ -39,7 +39,7 @@ end subroutine ieee_is_nan_f64
 subroutine isnan_f80(r)
   real(KIND=10) :: r
   i = isnan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f80) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f80) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine isnan_f80
 
@@ -48,7 +48,7 @@ subroutine ieee_is_nan_f80(r)
   use ieee_arithmetic
   real(KIND=10) :: r
   i = ieee_is_nan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f80) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f80) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_nan_f80
 
@@ -56,7 +56,7 @@ end subroutine ieee_is_nan_f80
 subroutine isnan_f128(r)
   real(KIND=16) :: r
   i = isnan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f128) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine isnan_f128
 
@@ -65,6 +65,6 @@ subroutine ieee_is_nan_f128(r)
   use ieee_arithmetic
   real(KIND=16) :: r
   i = ieee_is_nan(r)
-  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f128) -> i1
+  ! CHECK: %[[l:.*]] = "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 3 : i32}> : (f128) -> i1
   ! CHECK: fir.convert %[[l]] : (i1) -> !fir.logical<4>
 end subroutine ieee_is_nan_f128

diff  --git a/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h b/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
index b924f05e39f7ed..eea16b4da6a690 100644
--- a/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
+++ b/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
@@ -49,29 +49,9 @@ class AttrConvertFastMathToLLVM {
 
   ArrayRef<NamedAttribute> getAttrs() const { return convertedAttr.getAttrs(); }
 
-protected:
+private:
   NamedAttrList convertedAttr;
 };
-
-/// Wrapper around AttrConvertFastMathToLLVM that also sets the "kinds"
-/// attribute to the bitmask specified in `Kinds`, which is used for converting
-/// operations that lower to llvm.is.fpclass.
-template <unsigned Kinds, typename SourceOp, typename TargetOp>
-class AttrConvertAddFpclassKinds
-    : public AttrConvertFastMathToLLVM<SourceOp, TargetOp> {
-public:
-  AttrConvertAddFpclassKinds(SourceOp op)
-      : AttrConvertFastMathToLLVM<SourceOp, TargetOp>(op) {
-    convertedAttr.set(
-        "kinds",
-        IntegerAttr::get(IntegerType::get(op.getContext(), 32), Kinds));
-  }
-
-  ArrayRef<NamedAttribute> getAttrs() const { return convertedAttr.getAttrs(); }
-
-protected:
-  using AttrConvertFastMathToLLVM<SourceOp, TargetOp>::convertedAttr;
-};
 } // namespace arith
 } // namespace mlir
 

diff  --git a/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td b/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
index d7d297ce81c185..2ffd49c5034e69 100644
--- a/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
+++ b/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
@@ -83,20 +83,6 @@ class Arith_FloatBinaryOp<string mnemonic, list<Trait> traits = []> :
                           attr-dict `:` type($result) }];
 }
 
-// Base class for floating point unary predicate operations.
-class Arith_FloatPredicateOp<string mnemonic, list<Trait> traits = []> :
-    Arith_Op<mnemonic,
-      !listconcat([DeclareOpInterfaceMethods<ArithFastMathInterface>, Pure,
-        TypesMatchWith<"result type has i1 element type and same shape as operands",
-        "operand", "result", "::getI1SameShape($_self)">], traits)>,
-    Arguments<(ins FloatLike:$operand,
-      DefaultValuedAttr<
-        Arith_FastMathAttr, "::mlir::arith::FastMathFlags::none">:$fastmath)>,
-    Results<(outs BoolLike:$result)> {
-  let assemblyFormat = [{ $operand (`fastmath` `` $fastmath^)?
-                          attr-dict `:` type($operand) }];
-}
-
 // Base class for arithmetic cast operations. Requires a single operand and
 // result. If either is a shaped type, then the other must be of the same shape.
 class Arith_CastOp<string mnemonic, TypeConstraint From, TypeConstraint To,
@@ -985,22 +971,6 @@ def Arith_RemFOp : Arith_FloatBinaryOp<"remf"> {
   let hasFolder = 1;
 }
 
-//===----------------------------------------------------------------------===//
-// IsNanOp
-//===----------------------------------------------------------------------===//
-def Arith_IsNanOp : Arith_FloatPredicateOp<"is_nan"> {
-  let summary = "Returns true for IEEE NaN inputs";
-  let hasFolder = 1;
-}
-
-//===----------------------------------------------------------------------===//
-// IsInfOp
-//===----------------------------------------------------------------------===//
-def Arith_IsInfOp : Arith_FloatPredicateOp<"is_inf"> {
-  let summary = "Returns true for infinite float inputs";
-  let hasFolder = 1;
-}
-
 //===----------------------------------------------------------------------===//
 // ExtUIOp
 //===----------------------------------------------------------------------===//

diff  --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
index 6f70cb2d8bc1dc..63c9323e9ec084 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
@@ -120,21 +120,17 @@ def LLVM_AbsOp : LLVM_OneResultIntrOp<"abs", [], [0], [Pure]> {
   }];
 }
 
-def LLVM_IsFPClass : LLVM_OneResultIntrOp<"is.fpclass", [], [0], [Pure],
-                                          /*requiresFastmath=*/1> {
-  let arguments = (ins LLVM_ScalarOrVectorOf<LLVM_AnyFloat>:$in,
-                       I32Attr:$kinds,
-                       DefaultValuedAttr<LLVM_FastmathFlagsAttr, "{}">:$fastmathFlags);
+def LLVM_IsFPClass : LLVM_OneResultIntrOp<"is.fpclass", [], [0], [Pure]> {
+  let arguments = (ins LLVM_ScalarOrVectorOf<LLVM_AnyFloat>:$in, I32Attr:$bit);
   string mlirBuilder = [{
     auto op = $_builder.create<$_qualCppClassName>($_location,
-      $_resultType, $in, $_int_attr($kinds), nullptr);
-    moduleImport.setFastmathFlagsAttr(inst, op);
-    $res = op;
+      $_resultType, $in, $_int_attr($bit));
+      $res = op;
   }];
   string llvmBuilder = [{
     auto *inst = createIntrinsicCall(
       builder, llvm::Intrinsic::}] # llvmEnumName # [{,
-      {$in, builder.getInt32(op.getKinds())},
+      {$in, builder.getInt32(op.getBit())},
       }] # declTypes # [{);
     $res = inst;
   }];

diff  --git a/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp b/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
index d90154612a55d1..bc7e831880753c 100644
--- a/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
+++ b/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
@@ -54,18 +54,6 @@ using FPToSIOpLowering =
     VectorConvertToLLVMPattern<arith::FPToSIOp, LLVM::FPToSIOp>;
 using FPToUIOpLowering =
     VectorConvertToLLVMPattern<arith::FPToUIOp, LLVM::FPToUIOp>;
-template <typename SourceOp, typename TargetOp>
-// FPClass bitmask for -inf (bit 2) and +inf (bit 9).
-using InfKinds =
-    arith::AttrConvertAddFpclassKinds<(1 << 2) | (1 << 9), SourceOp, TargetOp>;
-using IsInfLowering =
-    VectorConvertToLLVMPattern<arith::IsInfOp, LLVM::IsFPClass, InfKinds>;
-// FPClass bitmask for signalling NaN (bit 0) or quiet NaN (bit 1).
-template <typename SourceOp, typename TargetOp>
-using NanKinds =
-    arith::AttrConvertAddFpclassKinds<(1 << 0) | (1 << 1), SourceOp, TargetOp>;
-using IsNanLowering =
-    VectorConvertToLLVMPattern<arith::IsNanOp, LLVM::IsFPClass, NanKinds>;
 using MaxFOpLowering =
     VectorConvertToLLVMPattern<arith::MaxFOp, LLVM::MaxNumOp,
                                arith::AttrConvertFastMathToLLVM>;
@@ -507,8 +495,6 @@ void mlir::arith::populateArithToLLVMConversionPatterns(
     FPToUIOpLowering,
     IndexCastOpSILowering,
     IndexCastOpUILowering,
-    IsInfLowering,
-    IsNanLowering,
     MaxFOpLowering,
     MaxSIOpLowering,
     MaxUIOpLowering,

diff  --git a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
index fe6e9de75c248c..f74c7e3490cd80 100644
--- a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
+++ b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
@@ -1094,8 +1094,6 @@ void mlir::arith::populateArithToSPIRVPatterns(
     spirv::ElementwiseOpPattern<arith::MulFOp, spirv::FMulOp>,
     spirv::ElementwiseOpPattern<arith::DivFOp, spirv::FDivOp>,
     spirv::ElementwiseOpPattern<arith::RemFOp, spirv::FRemOp>,
-    spirv::ElementwiseOpPattern<arith::IsNanOp, spirv::IsNanOp>,
-    spirv::ElementwiseOpPattern<arith::IsInfOp, spirv::IsInfOp>,
     TypeCastingOpPattern<arith::ExtUIOp, spirv::UConvertOp>, ExtUII1Pattern,
     TypeCastingOpPattern<arith::ExtSIOp, spirv::SConvertOp>, ExtSII1Pattern,
     TypeCastingOpPattern<arith::ExtFOp, spirv::FConvertOp>,

diff  --git a/mlir/lib/Dialect/Arith/IR/ArithOps.cpp b/mlir/lib/Dialect/Arith/IR/ArithOps.cpp
index 44a3217714dcbf..5e1c4302a16c43 100644
--- a/mlir/lib/Dialect/Arith/IR/ArithOps.cpp
+++ b/mlir/lib/Dialect/Arith/IR/ArithOps.cpp
@@ -1109,42 +1109,6 @@ OpFoldResult arith::RemFOp::fold(FoldAdaptor adaptor) {
                                       });
 }
 
-static Attribute getBoolAttribute(Type type, MLIRContext *ctx, bool value) {
-  auto boolAttr = BoolAttr::get(ctx, value);
-  ShapedType shapedType = llvm::dyn_cast_or_null<ShapedType>(type);
-  if (!shapedType)
-    return boolAttr;
-  return DenseElementsAttr::get(shapedType, boolAttr);
-}
-
-//===----------------------------------------------------------------------===//
-// IsNanOp
-//===----------------------------------------------------------------------===//
-OpFoldResult IsNanOp::fold(FoldAdaptor adaptor) {
-  if (bitEnumContainsAll(getFastmath(), FastMathFlags::nnan))
-    return getBoolAttribute(getType(), getContext(), false);
-  return constFoldCastOp<FloatAttr, IntegerAttr>(
-      adaptor.getOperands(), getType(),
-      [](const APFloat &x, bool &success) -> APInt {
-        success = true;
-        return APInt(1, x.isNaN());
-      });
-}
-
-//===----------------------------------------------------------------------===//
-// IsInfOp
-//===----------------------------------------------------------------------===//
-OpFoldResult IsInfOp::fold(FoldAdaptor adaptor) {
-  if (bitEnumContainsAll(getFastmath(), FastMathFlags::ninf))
-    return getBoolAttribute(getType(), getContext(), false);
-  return constFoldCastOp<FloatAttr, IntegerAttr>(
-      adaptor.getOperands(), getType(),
-      [](const APFloat &x, bool &success) -> APInt {
-        success = true;
-        return APInt(1, x.isInfinity());
-      });
-}
-
 //===----------------------------------------------------------------------===//
 // Utility functions for verifying cast ops
 //===----------------------------------------------------------------------===//
@@ -1695,6 +1659,14 @@ static bool applyCmpPredicateToEqualOperands(arith::CmpIPredicate predicate) {
   llvm_unreachable("unknown cmpi predicate kind");
 }
 
+static Attribute getBoolAttribute(Type type, MLIRContext *ctx, bool value) {
+  auto boolAttr = BoolAttr::get(ctx, value);
+  ShapedType shapedType = llvm::dyn_cast_or_null<ShapedType>(type);
+  if (!shapedType)
+    return boolAttr;
+  return DenseElementsAttr::get(shapedType, boolAttr);
+}
+
 static std::optional<int64_t> getIntegerWidth(Type t) {
   if (auto intType = llvm::dyn_cast<IntegerType>(t)) {
     return intType.getWidth();

diff  --git a/mlir/lib/Dialect/Arith/Transforms/ExpandOps.cpp b/mlir/lib/Dialect/Arith/Transforms/ExpandOps.cpp
index 092ff52319a98e..9810d2923da40a 100644
--- a/mlir/lib/Dialect/Arith/Transforms/ExpandOps.cpp
+++ b/mlir/lib/Dialect/Arith/Transforms/ExpandOps.cpp
@@ -179,7 +179,8 @@ struct MaxMinFOpConverter : public OpRewritePattern<OpTy> {
     Value select = rewriter.create<arith::SelectOp>(loc, cmp, lhs, rhs);
 
     // Handle the case where rhs is NaN: 'isNaN(rhs) ? rhs : select'.
-    Value isNaN = rewriter.create<arith::IsNanOp>(loc, rhs, op.getFastmath());
+    Value isNaN = rewriter.create<arith::CmpFOp>(loc, arith::CmpFPredicate::UNO,
+                                                 rhs, rhs);
     rewriter.replaceOpWithNewOp<arith::SelectOp>(op, isNaN, rhs, select);
     return success();
   }

diff  --git a/mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir b/mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir
index edb3de9cf68338..59c7fb6201dd26 100644
--- a/mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir
+++ b/mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir
@@ -75,28 +75,6 @@ func.func @ops(f32, f32, i32, i32, f64) -> (f32, i32) {
   return %0, %4 : f32, i32
 }
 
-// CHECK-LABEL: @float_pred_ops
-func.func @float_pred_ops(%arg0: f32) {
-  // CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 516 : i32}> : (f32) -> i1
-  arith.is_inf %arg0 : f32
-  // CHECK-NEXT: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<nnan>, kinds = 516 : i32}> : (f32) -> i1
-  arith.is_inf %arg0 fastmath <nnan> : f32
-  // CHECK-NEXT: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (f32) -> i1
-  arith.is_nan %arg0 : f32
-  // CHECK-NEXT: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<ninf>, kinds = 3 : i32}> : (f32) -> i1
-  arith.is_nan %arg0 fastmath <ninf> : f32
-  return
-}
-
-// CHECK-LABEL: @vector_float_pred_ops
-func.func @vector_float_pred_ops(%arg0: vector<4xf32>) {
-  // CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 516 : i32}> : (vector<4xf32>) -> vector<4xi1>
-  arith.is_inf %arg0 : vector<4xf32>
-  // CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 3 : i32}> : (vector<4xf32>) -> vector<4xi1>
-  arith.is_nan %arg0 : vector<4xf32>
-  return
-}
-
 // Checking conversion of index types to integers using i1, assuming no target
 // system would have a 1-bit address space.  Otherwise, we would have had to
 // make this test dependent on the pointer size on the target system.

diff  --git a/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir
index 06b5cccd5f41e1..d70df982c366ad 100644
--- a/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir
+++ b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir
@@ -169,16 +169,6 @@ func.func @float32_binary_scalar(%lhs: f32, %rhs: f32) {
   return
 }
 
-// Check float predicate operation conversions
-// CHECK-LABEL: @float32_predicate_scalar
-func.func @float32_predicate_scalar(%arg0 : f32) {
-  // CHECK: spirv.IsNan %{{.*}}: f32
-  %0 = arith.is_nan %arg0 : f32
-  // CHECK: spirv.IsInf %{{.*}}: f32
-  %1 = arith.is_inf %arg0 : f32
-  return
-}
-
 // Check int vector types.
 // CHECK-LABEL: @int_vector234
 func.func @int_vector234(%arg0: vector<2xi8>, %arg1: vector<4xi64>) {

diff  --git a/mlir/test/Dialect/Arith/canonicalize.mlir b/mlir/test/Dialect/Arith/canonicalize.mlir
index b65f8d3b0e01e4..5b392fe9cf58a0 100644
--- a/mlir/test/Dialect/Arith/canonicalize.mlir
+++ b/mlir/test/Dialect/Arith/canonicalize.mlir
@@ -2567,78 +2567,3 @@ func.func @foldOrXor6(%arg0: index) -> index {
   %2 = arith.ori %arg0, %1 : index
   return %2 : index
 }
-
-// -----
-
-// CHECK-LABEL: @foldIsNanFastmath
-//  CHECK-SAME: (%[[ARG:.+]]: f32)
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldIsNanFastmath(%arg0: f32) -> i1 {
-  %0 = arith.is_nan %arg0 fastmath <nnan> : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: @foldIsNan
-//      CHECK:   %[[TRUE:.+]] = arith.constant true
-//      CHECK:   return %[[TRUE]]
-func.func @foldIsNan() -> i1 {
-  %cNan = arith.constant 0x7FFFFFFF : f32
-  %0 = arith.is_nan %cNan : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: @foldNanIsNotNanWithFastmath
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldNanIsNotNanWithFastmath() -> i1 {
-  %cNan = arith.constant 0x7FFFFFFF : f32
-  %0 = arith.is_nan %cNan fastmath<nnan> : f32
-  func.return %0 : i1
-}
-
-
-// CHECK-LABEL: @foldIsNotNan
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldIsNotNan() -> i1 {
-  %cNan = arith.constant 1.0 : f32
-  %0 = arith.is_nan %cNan : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: @foldIsInfFastmath
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldIsInfFastmath(%arg0: f32) -> i1 {
-  %0 = arith.is_inf %arg0 fastmath <ninf> : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: @foldIsInf
-//      CHECK:   %[[TRUE:.+]] = arith.constant true
-//      CHECK:   return %[[TRUE]]
-func.func @foldIsInf() -> i1 {
-  %cInf = arith.constant 0x7F800000 : f32
-  %0 = arith.is_inf %cInf : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: @foldInfIsNotInfWithFastmath
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldInfIsNotInfWithFastmath() -> i1 {
-  %cInf = arith.constant 0x7F800000 : f32
-  %0 = arith.is_inf %cInf fastmath<ninf> : f32
-  func.return %0 : i1
-}
-
-
-// CHECK-LABEL: @foldIsNotInf
-//      CHECK:   %[[FALSE:.+]] = arith.constant false
-//      CHECK:   return %[[FALSE]]
-func.func @foldIsNotInf() -> i1 {
-  %cInf = arith.constant 1.0 : f32
-  %0 = arith.is_inf %cInf : f32
-  func.return %0 : i1
-}

diff  --git a/mlir/test/Dialect/Arith/expand-ops.mlir b/mlir/test/Dialect/Arith/expand-ops.mlir
index e8d98a0736e8ed..9f63c941353631 100644
--- a/mlir/test/Dialect/Arith/expand-ops.mlir
+++ b/mlir/test/Dialect/Arith/expand-ops.mlir
@@ -184,7 +184,7 @@ func.func @maxf(%a: f32, %b: f32) -> f32 {
 // CHECK-SAME: %[[LHS:.*]]: f32, %[[RHS:.*]]: f32)
 // CHECK-NEXT: %[[CMP:.*]] = arith.cmpf ugt, %[[LHS]], %[[RHS]] : f32
 // CHECK-NEXT: %[[SELECT:.*]] = arith.select %[[CMP]], %[[LHS]], %[[RHS]] : f32
-// CHECK-NEXT: %[[IS_NAN:.*]] = arith.is_nan %[[RHS]] : f32
+// CHECK-NEXT: %[[IS_NAN:.*]] = arith.cmpf uno, %[[RHS]], %[[RHS]] : f32
 // CHECK-NEXT: %[[RESULT:.*]] = arith.select %[[IS_NAN]], %[[RHS]], %[[SELECT]] : f32
 // CHECK-NEXT: return %[[RESULT]] : f32
 
@@ -198,7 +198,7 @@ func.func @maxf_vector(%a: vector<4xf16>, %b: vector<4xf16>) -> vector<4xf16> {
 // CHECK-SAME: %[[LHS:.*]]: vector<4xf16>, %[[RHS:.*]]: vector<4xf16>)
 // CHECK-NEXT: %[[CMP:.*]] = arith.cmpf ugt, %[[LHS]], %[[RHS]] : vector<4xf16>
 // CHECK-NEXT: %[[SELECT:.*]] = arith.select %[[CMP]], %[[LHS]], %[[RHS]]
-// CHECK-NEXT: %[[IS_NAN:.*]] = arith.is_nan  %[[RHS]] : vector<4xf16>
+// CHECK-NEXT: %[[IS_NAN:.*]] = arith.cmpf uno, %[[RHS]], %[[RHS]] : vector<4xf16>
 // CHECK-NEXT: %[[RESULT:.*]] = arith.select %[[IS_NAN]], %[[RHS]], %[[SELECT]]
 // CHECK-NEXT: return %[[RESULT]] : vector<4xf16>
 
@@ -213,7 +213,7 @@ func.func @minf(%a: f32, %b: f32) -> f32 {
 // CHECK-SAME: %[[LHS:.*]]: f32, %[[RHS:.*]]: f32)
 // CHECK-NEXT: %[[CMP:.*]] = arith.cmpf ult, %[[LHS]], %[[RHS]] : f32
 // CHECK-NEXT: %[[SELECT:.*]] = arith.select %[[CMP]], %[[LHS]], %[[RHS]] : f32
-// CHECK-NEXT: %[[IS_NAN:.*]] = arith.is_nan %[[RHS]] : f32
+// CHECK-NEXT: %[[IS_NAN:.*]] = arith.cmpf uno, %[[RHS]], %[[RHS]] : f32
 // CHECK-NEXT: %[[RESULT:.*]] = arith.select %[[IS_NAN]], %[[RHS]], %[[SELECT]] : f32
 // CHECK-NEXT: return %[[RESULT]] : f32
 

diff  --git a/mlir/test/Dialect/Arith/ops.mlir b/mlir/test/Dialect/Arith/ops.mlir
index 2e3af34169b85e..faa138a170ddfa 100644
--- a/mlir/test/Dialect/Arith/ops.mlir
+++ b/mlir/test/Dialect/Arith/ops.mlir
@@ -577,30 +577,6 @@ func.func @test_remf_scalable_vector(%arg0 : vector<[8]xf64>, %arg1 : vector<[8]
   return %0 : vector<[8]xf64>
 }
 
-// CHECK-LABEL: test_is_nan
-func.func @test_is_nan(%arg0 : f32) -> i1 {
-  %0 = arith.is_nan %arg0 : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: test_is_nan_vector
-func.func @test_is_nan_vector(%arg0 : vector<2x2xf32>) -> vector<2x2xi1> {
-  %0 = arith.is_nan %arg0 : vector<2x2xf32>
-  func.return %0 : vector<2x2xi1>
-}
-
-// CHECK-LABEL: test_is_inf
-func.func @test_is_inf(%arg0 : f32) -> i1 {
-  %0 = arith.is_inf %arg0 : f32
-  func.return %0 : i1
-}
-
-// CHECK-LABEL: test_is_inf_vector
-func.func @test_is_inf_vector(%arg0 : vector<2x2xf32>) -> vector<2x2xi1> {
-  %0 = arith.is_inf %arg0 : vector<2x2xf32>
-  func.return %0 : vector<2x2xi1>
-}
-
 // CHECK-LABEL: test_extui
 func.func @test_extui(%arg0 : i32) -> i64 {
   %0 = arith.extui %arg0 : i32 to i64

diff  --git a/mlir/test/Target/LLVMIR/Import/intrinsic.ll b/mlir/test/Target/LLVMIR/Import/intrinsic.ll
index adf69a03b9f850..6067c73067e3ff 100644
--- a/mlir/test/Target/LLVMIR/Import/intrinsic.ll
+++ b/mlir/test/Target/LLVMIR/Import/intrinsic.ll
@@ -17,9 +17,9 @@ define void @fmuladd_test(float %0, float %1, <8 x float> %2, ptr %3) {
 
 ; CHECK-LABEL:  llvm.func @fpclass_test
 define void @fpclass_test(float %0, <8 x float> %1) {
-  ; CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 0 : i32}> : (f32) -> i1
+  ; CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 0 : i32}> : (f32) -> i1
   %3 = call i1 @llvm.is.fpclass.f32(float %0, i32 0)
-  ; CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{fastmathFlags = #llvm.fastmath<none>, kinds = 1 : i32}> : (vector<8xf32>) -> vector<8xi1>
+  ; CHECK: "llvm.intr.is.fpclass"(%{{.*}}) <{bit = 1 : i32}> : (vector<8xf32>) -> vector<8xi1>
   %4 = call <8 x i1> @llvm.is.fpclass.v8f32(<8 x float> %1, i32 1)
   ret void
 }

diff  --git a/mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir b/mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir
index 080539c0cc6e43..2c37e53e4e556f 100644
--- a/mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir
@@ -18,7 +18,7 @@ llvm.func @intrinsics(%arg0: f32, %arg1: f32, %arg2: vector<8xf32>, %arg3: !llvm
 // CHECK-LABEL: @fpclass_test
 llvm.func @fpclass_test(%arg0: f32) -> i1 {
   // CHECK: call i1 @llvm.is.fpclass
-  %0 = "llvm.intr.is.fpclass"(%arg0) <{fastmathFlags = #llvm.fastmath<nnan>, kinds = 3 : i32 }>: (f32) -> i1
+  %0 = "llvm.intr.is.fpclass"(%arg0) <{bit = 0 : i32 }>: (f32) -> i1
   llvm.return %0 : i1
 }
 


        


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