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llvm-mirror/test/CodeGen/AMDGPU/sdivrem24.ll
Stanislav Mekhanoshin cc17ccd818 [AMDGPU] Convert rcp to rcp_iflag 
If a source of rcp instruction is a result of any conversion from
an integer convert it into rcp_iflag instruction. No FP exception
can ever happen except division by zero if a single precision rcp
argument is a representation of an integral number.

Differential Revision: https://reviews.llvm.org/D48569

llvm-svn: 335742
2018-06-27 15:33:33 +00:00

338 lines
11 KiB
LLVM
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; RUN: llc -march=amdgcn < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
; FUNC-LABEL: {{^}}sdiv24_i8:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @sdiv24_i8(i8 addrspace(1)* %out, i8 addrspace(1)* %in) {
%den_ptr = getelementptr i8, i8 addrspace(1)* %in, i8 1
%num = load i8, i8 addrspace(1) * %in
%den = load i8, i8 addrspace(1) * %den_ptr
%result = sdiv i8 %num, %den
store i8 %result, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}sdiv24_i16:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @sdiv24_i16(i16 addrspace(1)* %out, i16 addrspace(1)* %in) {
%den_ptr = getelementptr i16, i16 addrspace(1)* %in, i16 1
%num = load i16, i16 addrspace(1) * %in, align 2
%den = load i16, i16 addrspace(1) * %den_ptr, align 2
%result = sdiv i16 %num, %den
store i16 %result, i16 addrspace(1)* %out, align 2
ret void
}
; FUNC-LABEL: {{^}}sdiv24_i32:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @sdiv24_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i24.0 = shl i32 %den, 8
%num.i24 = ashr i32 %num.i24.0, 8
%den.i24 = ashr i32 %den.i24.0, 8
%result = sdiv i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}sdiv25_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @sdiv25_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 7
%den.i24.0 = shl i32 %den, 7
%num.i24 = ashr i32 %num.i24.0, 7
%den.i24 = ashr i32 %den.i24.0, 7
%result = sdiv i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}test_no_sdiv24_i32_1:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @test_no_sdiv24_i32_1(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i24.0 = shl i32 %den, 7
%num.i24 = ashr i32 %num.i24.0, 8
%den.i24 = ashr i32 %den.i24.0, 7
%result = sdiv i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}test_no_sdiv24_i32_2:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @test_no_sdiv24_i32_2(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 7
%den.i24.0 = shl i32 %den, 8
%num.i24 = ashr i32 %num.i24.0, 7
%den.i24 = ashr i32 %den.i24.0, 8
%result = sdiv i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}srem24_i8:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @srem24_i8(i8 addrspace(1)* %out, i8 addrspace(1)* %in) {
%den_ptr = getelementptr i8, i8 addrspace(1)* %in, i8 1
%num = load i8, i8 addrspace(1) * %in
%den = load i8, i8 addrspace(1) * %den_ptr
%result = srem i8 %num, %den
store i8 %result, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}srem24_i16:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @srem24_i16(i16 addrspace(1)* %out, i16 addrspace(1)* %in) {
%den_ptr = getelementptr i16, i16 addrspace(1)* %in, i16 1
%num = load i16, i16 addrspace(1) * %in, align 2
%den = load i16, i16 addrspace(1) * %den_ptr, align 2
%result = srem i16 %num, %den
store i16 %result, i16 addrspace(1)* %out, align 2
ret void
}
; FUNC-LABEL: {{^}}srem24_i32:
; SI: v_cvt_f32_i32
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_cvt_i32_f32
; EG: INT_TO_FLT
; EG-DAG: INT_TO_FLT
; EG-DAG: RECIP_IEEE
; EG: FLT_TO_INT
define amdgpu_kernel void @srem24_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i24.0 = shl i32 %den, 8
%num.i24 = ashr i32 %num.i24.0, 8
%den.i24 = ashr i32 %den.i24.0, 8
%result = srem i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}no_srem25_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @no_srem25_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 7
%den.i24.0 = shl i32 %den, 7
%num.i24 = ashr i32 %num.i24.0, 7
%den.i24 = ashr i32 %den.i24.0, 7
%result = srem i32 %num.i24, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}no_sdiv25_i24_i25_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @no_sdiv25_i24_i25_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i25.0 = shl i32 %den, 7
%num.i24 = ashr i32 %num.i24.0, 8
%den.i25 = ashr i32 %den.i25.0, 7
%result = sdiv i32 %num.i24, %den.i25
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}no_sdiv25_i25_i24_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @no_sdiv25_i25_i24_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i25.0 = shl i32 %num, 7
%den.i24.0 = shl i32 %den, 8
%num.i25 = ashr i32 %num.i25.0, 7
%den.i24 = ashr i32 %den.i24.0, 8
%result = sdiv i32 %num.i25, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}no_srem25_i24_i25_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @no_srem25_i24_i25_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i25.0 = shl i32 %den, 7
%num.i24 = ashr i32 %num.i24.0, 8
%den.i25 = ashr i32 %den.i25.0, 7
%result = srem i32 %num.i24, %den.i25
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}no_srem25_i25_i24_i32:
; SI-NOT: v_cvt_f32_i32
; SI-NOT: v_rcp_f32
; EG-NOT: INT_TO_FLT
; EG-NOT: RECIP_IEEE
define amdgpu_kernel void @no_srem25_i25_i24_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i25.0 = shl i32 %num, 7
%den.i24.0 = shl i32 %den, 8
%num.i25 = ashr i32 %num.i25.0, 7
%den.i24 = ashr i32 %den.i24.0, 8
%result = srem i32 %num.i25, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}srem25_i24_i11_i32:
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_bfe_i32 v{{[0-9]+}}, v{{[0-9]+}}, 0, 24
; EG: INT_TO_FLT
; EG: RECIP_IEEE
define amdgpu_kernel void @srem25_i24_i11_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i24.0 = shl i32 %num, 8
%den.i11.0 = shl i32 %den, 21
%num.i24 = ashr i32 %num.i24.0, 8
%den.i11 = ashr i32 %den.i11.0, 21
%result = srem i32 %num.i24, %den.i11
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}srem25_i11_i24_i32:
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_bfe_i32 v{{[0-9]+}}, v{{[0-9]+}}, 0, 24
; EG: INT_TO_FLT
; EG: RECIP_IEEE
define amdgpu_kernel void @srem25_i11_i24_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i11.0 = shl i32 %num, 21
%den.i24.0 = shl i32 %den, 8
%num.i11 = ashr i32 %num.i11.0, 21
%den.i24 = ashr i32 %den.i24.0, 8
%result = srem i32 %num.i11, %den.i24
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}srem25_i17_i12_i32:
; SI: v_cvt_f32_i32
; SI: v_rcp_iflag_f32
; SI: v_bfe_i32 v{{[0-9]+}}, v{{[0-9]+}}, 0, 17
; EG: INT_TO_FLT
; EG: RECIP_IEEE
define amdgpu_kernel void @srem25_i17_i12_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%num = load i32, i32 addrspace(1) * %in, align 4
%den = load i32, i32 addrspace(1) * %den_ptr, align 4
%num.i17.0 = shl i32 %num, 15
%den.i12.0 = shl i32 %den, 20
%num.i17 = ashr i32 %num.i17.0, 15
%den.i12 = ashr i32 %den.i12.0, 20
%result = sdiv i32 %num.i17, %den.i12
store i32 %result, i32 addrspace(1)* %out, align 4
ret void
}
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