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clang-p2996/llvm/test/Transforms/SLPVectorizer/AMDGPU/reduction.ll
Farhana Aleen e2dfe8a853 [AMDGPU] Support horizontal vectorization. 
Author: FarhanaAleen

Reviewed By: rampitec, arsenm

Subscribers: llvm-commits, AMDGPU

Differential Revision: https://reviews.llvm.org/D46213

llvm-svn: 331313
2018-05-01 21:41:12 +00:00

346 lines
17 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -slp-vectorizer -dce < %s | FileCheck -check-prefixes=GCN,GFX9 %s
; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -slp-vectorizer -dce < %s | FileCheck -check-prefixes=GCN,VI %s
define half @reduction_half4(<4 x half> %a) {
; GFX9-LABEL: @reduction_half4(
; GFX9-NEXT: entry:
; GFX9-NEXT: [[RDX_SHUF:%.*]] = shufflevector <4 x half> [[A:%.*]], <4 x half> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX:%.*]] = fadd fast <4 x half> [[A]], [[RDX_SHUF]]
; GFX9-NEXT: [[RDX_SHUF1:%.*]] = shufflevector <4 x half> [[BIN_RDX]], <4 x half> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX2:%.*]] = fadd fast <4 x half> [[BIN_RDX]], [[RDX_SHUF1]]
; GFX9-NEXT: [[TMP0:%.*]] = extractelement <4 x half> [[BIN_RDX2]], i32 0
; GFX9-NEXT: ret half [[TMP0]]
;
; VI-LABEL: @reduction_half4(
; VI-NEXT: entry:
; VI-NEXT: [[ELT0:%.*]] = extractelement <4 x half> [[A:%.*]], i64 0
; VI-NEXT: [[ELT1:%.*]] = extractelement <4 x half> [[A]], i64 1
; VI-NEXT: [[ELT2:%.*]] = extractelement <4 x half> [[A]], i64 2
; VI-NEXT: [[ELT3:%.*]] = extractelement <4 x half> [[A]], i64 3
; VI-NEXT: [[ADD1:%.*]] = fadd fast half [[ELT1]], [[ELT0]]
; VI-NEXT: [[ADD2:%.*]] = fadd fast half [[ELT2]], [[ADD1]]
; VI-NEXT: [[ADD3:%.*]] = fadd fast half [[ELT3]], [[ADD2]]
; VI-NEXT: ret half [[ADD3]]
;
entry:
%elt0 = extractelement <4 x half> %a, i64 0
%elt1 = extractelement <4 x half> %a, i64 1
%elt2 = extractelement <4 x half> %a, i64 2
%elt3 = extractelement <4 x half> %a, i64 3
%add1 = fadd fast half %elt1, %elt0
%add2 = fadd fast half %elt2, %add1
%add3 = fadd fast half %elt3, %add2
ret half %add3
}
define half @reduction_half8(<8 x half> %vec8) {
; GFX9-LABEL: @reduction_half8(
; GFX9-NEXT: entry:
; GFX9-NEXT: [[RDX_SHUF:%.*]] = shufflevector <8 x half> [[VEC8:%.*]], <8 x half> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX:%.*]] = fadd fast <8 x half> [[VEC8]], [[RDX_SHUF]]
; GFX9-NEXT: [[RDX_SHUF1:%.*]] = shufflevector <8 x half> [[BIN_RDX]], <8 x half> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX2:%.*]] = fadd fast <8 x half> [[BIN_RDX]], [[RDX_SHUF1]]
; GFX9-NEXT: [[RDX_SHUF3:%.*]] = shufflevector <8 x half> [[BIN_RDX2]], <8 x half> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX4:%.*]] = fadd fast <8 x half> [[BIN_RDX2]], [[RDX_SHUF3]]
; GFX9-NEXT: [[TMP0:%.*]] = extractelement <8 x half> [[BIN_RDX4]], i32 0
; GFX9-NEXT: ret half [[TMP0]]
;
; VI-LABEL: @reduction_half8(
; VI-NEXT: entry:
; VI-NEXT: [[ELT0:%.*]] = extractelement <8 x half> [[VEC8:%.*]], i64 0
; VI-NEXT: [[ELT1:%.*]] = extractelement <8 x half> [[VEC8]], i64 1
; VI-NEXT: [[ELT2:%.*]] = extractelement <8 x half> [[VEC8]], i64 2
; VI-NEXT: [[ELT3:%.*]] = extractelement <8 x half> [[VEC8]], i64 3
; VI-NEXT: [[ELT4:%.*]] = extractelement <8 x half> [[VEC8]], i64 4
; VI-NEXT: [[ELT5:%.*]] = extractelement <8 x half> [[VEC8]], i64 5
; VI-NEXT: [[ELT6:%.*]] = extractelement <8 x half> [[VEC8]], i64 6
; VI-NEXT: [[ELT7:%.*]] = extractelement <8 x half> [[VEC8]], i64 7
; VI-NEXT: [[ADD1:%.*]] = fadd fast half [[ELT1]], [[ELT0]]
; VI-NEXT: [[ADD2:%.*]] = fadd fast half [[ELT2]], [[ADD1]]
; VI-NEXT: [[ADD3:%.*]] = fadd fast half [[ELT3]], [[ADD2]]
; VI-NEXT: [[ADD4:%.*]] = fadd fast half [[ELT4]], [[ADD3]]
; VI-NEXT: [[ADD5:%.*]] = fadd fast half [[ELT5]], [[ADD4]]
; VI-NEXT: [[ADD6:%.*]] = fadd fast half [[ELT6]], [[ADD5]]
; VI-NEXT: [[ADD7:%.*]] = fadd fast half [[ELT7]], [[ADD6]]
; VI-NEXT: ret half [[ADD7]]
;
entry:
%elt0 = extractelement <8 x half> %vec8, i64 0
%elt1 = extractelement <8 x half> %vec8, i64 1
%elt2 = extractelement <8 x half> %vec8, i64 2
%elt3 = extractelement <8 x half> %vec8, i64 3
%elt4 = extractelement <8 x half> %vec8, i64 4
%elt5 = extractelement <8 x half> %vec8, i64 5
%elt6 = extractelement <8 x half> %vec8, i64 6
%elt7 = extractelement <8 x half> %vec8, i64 7
%add1 = fadd fast half %elt1, %elt0
%add2 = fadd fast half %elt2, %add1
%add3 = fadd fast half %elt3, %add2
%add4 = fadd fast half %elt4, %add3
%add5 = fadd fast half %elt5, %add4
%add6 = fadd fast half %elt6, %add5
%add7 = fadd fast half %elt7, %add6
ret half %add7
}
define half @reduction_half16(<16 x half> %vec16) {
; GFX9-LABEL: @reduction_half16(
; GFX9-NEXT: entry:
; GFX9-NEXT: [[RDX_SHUF:%.*]] = shufflevector <16 x half> [[VEC16:%.*]], <16 x half> undef, <16 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX:%.*]] = fadd fast <16 x half> [[VEC16]], [[RDX_SHUF]]
; GFX9-NEXT: [[RDX_SHUF1:%.*]] = shufflevector <16 x half> [[BIN_RDX]], <16 x half> undef, <16 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX2:%.*]] = fadd fast <16 x half> [[BIN_RDX]], [[RDX_SHUF1]]
; GFX9-NEXT: [[RDX_SHUF3:%.*]] = shufflevector <16 x half> [[BIN_RDX2]], <16 x half> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX4:%.*]] = fadd fast <16 x half> [[BIN_RDX2]], [[RDX_SHUF3]]
; GFX9-NEXT: [[RDX_SHUF5:%.*]] = shufflevector <16 x half> [[BIN_RDX4]], <16 x half> undef, <16 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX6:%.*]] = fadd fast <16 x half> [[BIN_RDX4]], [[RDX_SHUF5]]
; GFX9-NEXT: [[TMP0:%.*]] = extractelement <16 x half> [[BIN_RDX6]], i32 0
; GFX9-NEXT: ret half [[TMP0]]
;
; VI-LABEL: @reduction_half16(
; VI-NEXT: entry:
; VI-NEXT: [[ELT0:%.*]] = extractelement <16 x half> [[VEC16:%.*]], i64 0
; VI-NEXT: [[ELT1:%.*]] = extractelement <16 x half> [[VEC16]], i64 1
; VI-NEXT: [[ELT2:%.*]] = extractelement <16 x half> [[VEC16]], i64 2
; VI-NEXT: [[ELT3:%.*]] = extractelement <16 x half> [[VEC16]], i64 3
; VI-NEXT: [[ELT4:%.*]] = extractelement <16 x half> [[VEC16]], i64 4
; VI-NEXT: [[ELT5:%.*]] = extractelement <16 x half> [[VEC16]], i64 5
; VI-NEXT: [[ELT6:%.*]] = extractelement <16 x half> [[VEC16]], i64 6
; VI-NEXT: [[ELT7:%.*]] = extractelement <16 x half> [[VEC16]], i64 7
; VI-NEXT: [[ELT8:%.*]] = extractelement <16 x half> [[VEC16]], i64 8
; VI-NEXT: [[ELT9:%.*]] = extractelement <16 x half> [[VEC16]], i64 9
; VI-NEXT: [[ELT10:%.*]] = extractelement <16 x half> [[VEC16]], i64 10
; VI-NEXT: [[ELT11:%.*]] = extractelement <16 x half> [[VEC16]], i64 11
; VI-NEXT: [[ELT12:%.*]] = extractelement <16 x half> [[VEC16]], i64 12
; VI-NEXT: [[ELT13:%.*]] = extractelement <16 x half> [[VEC16]], i64 13
; VI-NEXT: [[ELT14:%.*]] = extractelement <16 x half> [[VEC16]], i64 14
; VI-NEXT: [[ELT15:%.*]] = extractelement <16 x half> [[VEC16]], i64 15
; VI-NEXT: [[ADD1:%.*]] = fadd fast half [[ELT1]], [[ELT0]]
; VI-NEXT: [[ADD2:%.*]] = fadd fast half [[ELT2]], [[ADD1]]
; VI-NEXT: [[ADD3:%.*]] = fadd fast half [[ELT3]], [[ADD2]]
; VI-NEXT: [[ADD4:%.*]] = fadd fast half [[ELT4]], [[ADD3]]
; VI-NEXT: [[ADD5:%.*]] = fadd fast half [[ELT5]], [[ADD4]]
; VI-NEXT: [[ADD6:%.*]] = fadd fast half [[ELT6]], [[ADD5]]
; VI-NEXT: [[ADD7:%.*]] = fadd fast half [[ELT7]], [[ADD6]]
; VI-NEXT: [[ADD8:%.*]] = fadd fast half [[ELT8]], [[ADD7]]
; VI-NEXT: [[ADD9:%.*]] = fadd fast half [[ELT9]], [[ADD8]]
; VI-NEXT: [[ADD10:%.*]] = fadd fast half [[ELT10]], [[ADD9]]
; VI-NEXT: [[ADD11:%.*]] = fadd fast half [[ELT11]], [[ADD10]]
; VI-NEXT: [[ADD12:%.*]] = fadd fast half [[ELT12]], [[ADD11]]
; VI-NEXT: [[ADD13:%.*]] = fadd fast half [[ELT13]], [[ADD12]]
; VI-NEXT: [[ADD14:%.*]] = fadd fast half [[ELT14]], [[ADD13]]
; VI-NEXT: [[ADD15:%.*]] = fadd fast half [[ELT15]], [[ADD14]]
; VI-NEXT: ret half [[ADD15]]
;
entry:
%elt0 = extractelement <16 x half> %vec16, i64 0
%elt1 = extractelement <16 x half> %vec16, i64 1
%elt2 = extractelement <16 x half> %vec16, i64 2
%elt3 = extractelement <16 x half> %vec16, i64 3
%elt4 = extractelement <16 x half> %vec16, i64 4
%elt5 = extractelement <16 x half> %vec16, i64 5
%elt6 = extractelement <16 x half> %vec16, i64 6
%elt7 = extractelement <16 x half> %vec16, i64 7
%elt8 = extractelement <16 x half> %vec16, i64 8
%elt9 = extractelement <16 x half> %vec16, i64 9
%elt10 = extractelement <16 x half> %vec16, i64 10
%elt11 = extractelement <16 x half> %vec16, i64 11
%elt12 = extractelement <16 x half> %vec16, i64 12
%elt13 = extractelement <16 x half> %vec16, i64 13
%elt14 = extractelement <16 x half> %vec16, i64 14
%elt15 = extractelement <16 x half> %vec16, i64 15
%add1 = fadd fast half %elt1, %elt0
%add2 = fadd fast half %elt2, %add1
%add3 = fadd fast half %elt3, %add2
%add4 = fadd fast half %elt4, %add3
%add5 = fadd fast half %elt5, %add4
%add6 = fadd fast half %elt6, %add5
%add7 = fadd fast half %elt7, %add6
%add8 = fadd fast half %elt8, %add7
%add9 = fadd fast half %elt9, %add8
%add10 = fadd fast half %elt10, %add9
%add11 = fadd fast half %elt11, %add10
%add12 = fadd fast half %elt12, %add11
%add13 = fadd fast half %elt13, %add12
%add14 = fadd fast half %elt14, %add13
%add15 = fadd fast half %elt15, %add14
ret half %add15
}
; FIXME: support vectorization;
define half @reduction_sub_half4(<4 x half> %a) {
; GCN-LABEL: @reduction_sub_half4(
; GCN-NEXT: entry:
; GCN-NEXT: [[ELT0:%.*]] = extractelement <4 x half> [[A:%.*]], i64 0
; GCN-NEXT: [[ELT1:%.*]] = extractelement <4 x half> [[A]], i64 1
; GCN-NEXT: [[ELT2:%.*]] = extractelement <4 x half> [[A]], i64 2
; GCN-NEXT: [[ELT3:%.*]] = extractelement <4 x half> [[A]], i64 3
; GCN-NEXT: [[ADD1:%.*]] = fsub fast half [[ELT1]], [[ELT0]]
; GCN-NEXT: [[ADD2:%.*]] = fsub fast half [[ELT2]], [[ADD1]]
; GCN-NEXT: [[ADD3:%.*]] = fsub fast half [[ELT3]], [[ADD2]]
; GCN-NEXT: ret half [[ADD3]]
;
entry:
%elt0 = extractelement <4 x half> %a, i64 0
%elt1 = extractelement <4 x half> %a, i64 1
%elt2 = extractelement <4 x half> %a, i64 2
%elt3 = extractelement <4 x half> %a, i64 3
%add1 = fsub fast half %elt1, %elt0
%add2 = fsub fast half %elt2, %add1
%add3 = fsub fast half %elt3, %add2
ret half %add3
}
define i16 @reduction_v4i16(<4 x i16> %a) {
; GFX9-LABEL: @reduction_v4i16(
; GFX9-NEXT: entry:
; GFX9-NEXT: [[RDX_SHUF:%.*]] = shufflevector <4 x i16> [[A:%.*]], <4 x i16> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX:%.*]] = add <4 x i16> [[A]], [[RDX_SHUF]]
; GFX9-NEXT: [[RDX_SHUF1:%.*]] = shufflevector <4 x i16> [[BIN_RDX]], <4 x i16> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX2:%.*]] = add <4 x i16> [[BIN_RDX]], [[RDX_SHUF1]]
; GFX9-NEXT: [[TMP0:%.*]] = extractelement <4 x i16> [[BIN_RDX2]], i32 0
; GFX9-NEXT: ret i16 [[TMP0]]
;
; VI-LABEL: @reduction_v4i16(
; VI-NEXT: entry:
; VI-NEXT: [[ELT0:%.*]] = extractelement <4 x i16> [[A:%.*]], i64 0
; VI-NEXT: [[ELT1:%.*]] = extractelement <4 x i16> [[A]], i64 1
; VI-NEXT: [[ELT2:%.*]] = extractelement <4 x i16> [[A]], i64 2
; VI-NEXT: [[ELT3:%.*]] = extractelement <4 x i16> [[A]], i64 3
; VI-NEXT: [[ADD1:%.*]] = add i16 [[ELT1]], [[ELT0]]
; VI-NEXT: [[ADD2:%.*]] = add i16 [[ELT2]], [[ADD1]]
; VI-NEXT: [[ADD3:%.*]] = add i16 [[ELT3]], [[ADD2]]
; VI-NEXT: ret i16 [[ADD3]]
;
entry:
%elt0 = extractelement <4 x i16> %a, i64 0
%elt1 = extractelement <4 x i16> %a, i64 1
%elt2 = extractelement <4 x i16> %a, i64 2
%elt3 = extractelement <4 x i16> %a, i64 3
%add1 = add i16 %elt1, %elt0
%add2 = add i16 %elt2, %add1
%add3 = add i16 %elt3, %add2
ret i16 %add3
}
define i16 @reduction_v8i16(<8 x i16> %vec8) {
; GFX9-LABEL: @reduction_v8i16(
; GFX9-NEXT: entry:
; GFX9-NEXT: [[RDX_SHUF:%.*]] = shufflevector <8 x i16> [[VEC8:%.*]], <8 x i16> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX:%.*]] = add <8 x i16> [[VEC8]], [[RDX_SHUF]]
; GFX9-NEXT: [[RDX_SHUF1:%.*]] = shufflevector <8 x i16> [[BIN_RDX]], <8 x i16> undef, <8 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX2:%.*]] = add <8 x i16> [[BIN_RDX]], [[RDX_SHUF1]]
; GFX9-NEXT: [[RDX_SHUF3:%.*]] = shufflevector <8 x i16> [[BIN_RDX2]], <8 x i16> undef, <8 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
; GFX9-NEXT: [[BIN_RDX4:%.*]] = add <8 x i16> [[BIN_RDX2]], [[RDX_SHUF3]]
; GFX9-NEXT: [[TMP0:%.*]] = extractelement <8 x i16> [[BIN_RDX4]], i32 0
; GFX9-NEXT: ret i16 [[TMP0]]
;
; VI-LABEL: @reduction_v8i16(
; VI-NEXT: entry:
; VI-NEXT: [[ELT0:%.*]] = extractelement <8 x i16> [[VEC8:%.*]], i64 0
; VI-NEXT: [[ELT1:%.*]] = extractelement <8 x i16> [[VEC8]], i64 1
; VI-NEXT: [[ELT2:%.*]] = extractelement <8 x i16> [[VEC8]], i64 2
; VI-NEXT: [[ELT3:%.*]] = extractelement <8 x i16> [[VEC8]], i64 3
; VI-NEXT: [[ELT4:%.*]] = extractelement <8 x i16> [[VEC8]], i64 4
; VI-NEXT: [[ELT5:%.*]] = extractelement <8 x i16> [[VEC8]], i64 5
; VI-NEXT: [[ELT6:%.*]] = extractelement <8 x i16> [[VEC8]], i64 6
; VI-NEXT: [[ELT7:%.*]] = extractelement <8 x i16> [[VEC8]], i64 7
; VI-NEXT: [[ADD1:%.*]] = add i16 [[ELT1]], [[ELT0]]
; VI-NEXT: [[ADD2:%.*]] = add i16 [[ELT2]], [[ADD1]]
; VI-NEXT: [[ADD3:%.*]] = add i16 [[ELT3]], [[ADD2]]
; VI-NEXT: [[ADD4:%.*]] = add i16 [[ELT4]], [[ADD3]]
; VI-NEXT: [[ADD5:%.*]] = add i16 [[ELT5]], [[ADD4]]
; VI-NEXT: [[ADD6:%.*]] = add i16 [[ELT6]], [[ADD5]]
; VI-NEXT: [[ADD7:%.*]] = add i16 [[ELT7]], [[ADD6]]
; VI-NEXT: ret i16 [[ADD7]]
;
entry:
%elt0 = extractelement <8 x i16> %vec8, i64 0
%elt1 = extractelement <8 x i16> %vec8, i64 1
%elt2 = extractelement <8 x i16> %vec8, i64 2
%elt3 = extractelement <8 x i16> %vec8, i64 3
%elt4 = extractelement <8 x i16> %vec8, i64 4
%elt5 = extractelement <8 x i16> %vec8, i64 5
%elt6 = extractelement <8 x i16> %vec8, i64 6
%elt7 = extractelement <8 x i16> %vec8, i64 7
%add1 = add i16 %elt1, %elt0
%add2 = add i16 %elt2, %add1
%add3 = add i16 %elt3, %add2
%add4 = add i16 %elt4, %add3
%add5 = add i16 %elt5, %add4
%add6 = add i16 %elt6, %add5
%add7 = add i16 %elt7, %add6
ret i16 %add7
}
; FIXME: This should be vectorized on GFX9.
define i16 @reduction_icmp_v4i16(<4 x i16> %vec4) {
; GCN-LABEL: @reduction_icmp_v4i16(
; GCN-NEXT: entry:
; GCN-NEXT: [[ELT0:%.*]] = extractelement <4 x i16> [[VEC4:%.*]], i64 0
; GCN-NEXT: [[ELT1:%.*]] = extractelement <4 x i16> [[VEC4]], i64 1
; GCN-NEXT: [[ELT2:%.*]] = extractelement <4 x i16> [[VEC4]], i64 2
; GCN-NEXT: [[ELT3:%.*]] = extractelement <4 x i16> [[VEC4]], i64 3
; GCN-NEXT: [[CMP1:%.*]] = icmp ult i16 [[ELT1]], [[ELT0]]
; GCN-NEXT: [[MIN1:%.*]] = select i1 [[CMP1]], i16 [[ELT1]], i16 [[ELT0]]
; GCN-NEXT: [[CMP2:%.*]] = icmp ult i16 [[ELT2]], [[MIN1]]
; GCN-NEXT: [[MIN2:%.*]] = select i1 [[CMP2]], i16 [[ELT2]], i16 [[MIN1]]
; GCN-NEXT: [[CMP3:%.*]] = icmp ult i16 [[ELT3]], [[MIN2]]
; GCN-NEXT: [[MIN3:%.*]] = select i1 [[CMP3]], i16 [[ELT3]], i16 [[MIN2]]
; GCN-NEXT: ret i16 [[MIN3]]
;
entry:
%elt0 = extractelement <4 x i16> %vec4, i64 0
%elt1 = extractelement <4 x i16> %vec4, i64 1
%elt2 = extractelement <4 x i16> %vec4, i64 2
%elt3 = extractelement <4 x i16> %vec4, i64 3
%cmp1 = icmp ult i16 %elt1, %elt0
%min1 = select i1 %cmp1, i16 %elt1, i16 %elt0
%cmp2 = icmp ult i16 %elt2, %min1
%min2 = select i1 %cmp2, i16 %elt2, i16 %min1
%cmp3 = icmp ult i16 %elt3, %min2
%min3 = select i1 %cmp3, i16 %elt3, i16 %min2
ret i16 %min3
}
; Tests to make sure reduction does not kick in. vega does not support packed math for types larger than 16 bits.
define float @reduction_v4float(<4 x float> %a) {
; GCN-LABEL: @reduction_v4float(
; GCN-NEXT: entry:
; GCN-NEXT: [[ELT0:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
; GCN-NEXT: [[ELT1:%.*]] = extractelement <4 x float> [[A]], i64 1
; GCN-NEXT: [[ELT2:%.*]] = extractelement <4 x float> [[A]], i64 2
; GCN-NEXT: [[ELT3:%.*]] = extractelement <4 x float> [[A]], i64 3
; GCN-NEXT: [[ADD1:%.*]] = fadd fast float [[ELT1]], [[ELT0]]
; GCN-NEXT: [[ADD2:%.*]] = fadd fast float [[ELT2]], [[ADD1]]
; GCN-NEXT: [[ADD3:%.*]] = fadd fast float [[ELT3]], [[ADD2]]
; GCN-NEXT: ret float [[ADD3]]
;
entry:
%elt0 = extractelement <4 x float> %a, i64 0
%elt1 = extractelement <4 x float> %a, i64 1
%elt2 = extractelement <4 x float> %a, i64 2
%elt3 = extractelement <4 x float> %a, i64 3
%add1 = fadd fast float %elt1, %elt0
%add2 = fadd fast float %elt2, %add1
%add3 = fadd fast float %elt3, %add2
ret float %add3
}
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