8386a388bd
closes #70071 - `CGBuiltin.cpp` - Add the unsigned\generic clamp intrinsic emitter. - `IntrinsicsDirectX.td` - add the `dx.clamp` & `dx.uclamp` intrinsics - `DXILIntrinsicExpansion.cpp` - add the `clamp` instruction expansion while maintaining vector form. - `SemaChecking.cpp` - Add `clamp` builtin Sema Checks. - `Builtins.td` - add a `clamp` builtin - `hlsl_intrinsics.h` - add the `clamp` api Why `clamp` as instruction expansion for DXIL? 1. SPIR-V has a GLSL `clamp` extension via: - [FClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#FClamp) - [UClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#UClamp) - [SClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#SClamp) 2. Further Clamp lowers to `min(max( x, min_range ), max_range)` which we have float, signed, & unsigned dixilOps.
95 lines
3.6 KiB
LLVM
95 lines
3.6 KiB
LLVM
; RUN: opt -S -dxil-op-lower < %s | FileCheck %s
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; Make sure dxil operation function calls for clamp/uclamp are generated for half/float/double/i16/i32/i64.
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; CHECK-LABEL:test_clamp_i16
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define noundef i16 @test_clamp_i16(i16 noundef %a, i16 noundef %b, i16 noundef %c) {
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entry:
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; CHECK: call i16 @dx.op.binary.i16(i32 37, i16 %{{.*}}, i16 %{{.*}})
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; CHECK: call i16 @dx.op.binary.i16(i32 38, i16 %{{.*}}, i16 %{{.*}})
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%0 = call i16 @llvm.dx.clamp.i16(i16 %a, i16 %b, i16 %c)
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ret i16 %0
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}
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; CHECK-LABEL:test_clamp_i32
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define noundef i32 @test_clamp_i32(i32 noundef %a, i32 noundef %b, i32 noundef %c) {
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entry:
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; CHECK: call i32 @dx.op.binary.i32(i32 37, i32 %{{.*}}, i32 %{{.*}})
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; CHECK: call i32 @dx.op.binary.i32(i32 38, i32 %{{.*}}, i32 %{{.*}})
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%0 = call i32 @llvm.dx.clamp.i32(i32 %a, i32 %b, i32 %c)
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ret i32 %0
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}
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; CHECK-LABEL:test_clamp_i64
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define noundef i64 @test_clamp_i64(i64 noundef %a, i64 noundef %b, i64 noundef %c) {
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entry:
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; CHECK: call i64 @dx.op.binary.i64(i32 37, i64 %a, i64 %b)
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; CHECK: call i64 @dx.op.binary.i64(i32 38, i64 %{{.*}}, i64 %c)
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%0 = call i64 @llvm.dx.clamp.i64(i64 %a, i64 %b, i64 %c)
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ret i64 %0
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}
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; CHECK-LABEL:test_clamp_half
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define noundef half @test_clamp_half(half noundef %a, half noundef %b, half noundef %c) {
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entry:
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; CHECK: call half @dx.op.binary.f16(i32 35, half %{{.*}}, half %{{.*}})
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; CHECK: call half @dx.op.binary.f16(i32 36, half %{{.*}}, half %{{.*}})
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%0 = call half @llvm.dx.clamp.f16(half %a, half %b, half %c)
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ret half %0
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}
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; CHECK-LABEL:test_clamp_float
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define noundef float @test_clamp_float(float noundef %a, float noundef %b, float noundef %c) {
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entry:
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; CHECK: call float @dx.op.binary.f32(i32 35, float %{{.*}}, float %{{.*}})
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; CHECK: call float @dx.op.binary.f32(i32 36, float %{{.*}}, float %{{.*}})
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%0 = call float @llvm.dx.clamp.f32(float %a, float %b, float %c)
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ret float %0
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}
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; CHECK-LABEL:test_clamp_double
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define noundef double @test_clamp_double(double noundef %a, double noundef %b, double noundef %c) {
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entry:
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; CHECK: call double @dx.op.binary.f64(i32 35, double %{{.*}}, double %{{.*}})
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; CHECK: call double @dx.op.binary.f64(i32 36, double %{{.*}}, double %{{.*}})
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%0 = call double @llvm.dx.clamp.f64(double %a, double %b, double %c)
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ret double %0
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}
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; CHECK-LABEL:test_uclamp_i16
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define noundef i16 @test_uclamp_i16(i16 noundef %a, i16 noundef %b, i16 noundef %c) {
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entry:
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; CHECK: call i16 @dx.op.binary.i16(i32 39, i16 %{{.*}}, i16 %{{.*}})
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; CHECK: call i16 @dx.op.binary.i16(i32 40, i16 %{{.*}}, i16 %{{.*}})
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%0 = call i16 @llvm.dx.uclamp.i16(i16 %a, i16 %b, i16 %c)
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ret i16 %0
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}
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; CHECK-LABEL:test_uclamp_i32
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define noundef i32 @test_uclamp_i32(i32 noundef %a, i32 noundef %b, i32 noundef %c) {
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entry:
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; CHECK: call i32 @dx.op.binary.i32(i32 39, i32 %{{.*}}, i32 %{{.*}})
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; CHECK: call i32 @dx.op.binary.i32(i32 40, i32 %{{.*}}, i32 %{{.*}})
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%0 = call i32 @llvm.dx.uclamp.i32(i32 %a, i32 %b, i32 %c)
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ret i32 %0
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}
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; CHECK-LABEL:test_uclamp_i64
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define noundef i64 @test_uclamp_i64(i64 noundef %a, i64 noundef %b, i64 noundef %c) {
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entry:
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; CHECK: call i64 @dx.op.binary.i64(i32 39, i64 %a, i64 %b)
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; CHECK: call i64 @dx.op.binary.i64(i32 40, i64 %{{.*}}, i64 %c)
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%0 = call i64 @llvm.dx.uclamp.i64(i64 %a, i64 %b, i64 %c)
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ret i64 %0
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}
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declare half @llvm.dx.clamp.f16(half, half, half)
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declare float @llvm.dx.clamp.f32(float, float, float)
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declare double @llvm.dx.clamp.f64(double, double, double)
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declare i16 @llvm.dx.clamp.i16(i16, i16, i16)
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declare i32 @llvm.dx.clamp.i32(i32, i32, i32)
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declare i64 @llvm.dx.clamp.i64(i64, i64, i64)
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declare i16 @llvm.dx.uclamp.i16(i16, i16, i16)
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declare i32 @llvm.dx.uclamp.i32(i32, i32, i32)
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declare i64 @llvm.dx.uclamp.i64(i64, i64, i64)
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