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llvm-project/llvm/test/Transforms/LoopVectorize/ARM/mve-qabs.ll
Nikita Popov a105877646
[InstCombine] Remove some of the complexity-based canonicalization (#91185) 
The idea behind this canonicalization is that it allows us to handle less
patterns, because we know that some will be canonicalized away. This is
indeed very useful to e.g. know that constants are always on the right.

However, this is only useful if the canonicalization is actually
reliable. This is the case for constants, but not for arguments: Moving
these to the right makes it look like the "more complex" expression is
guaranteed to be on the left, but this is not actually the case in
practice. It fails as soon as you replace the argument with another
instruction.

The end result is that it looks like things correctly work in tests,
while they actually don't. We use the "thwart complexity-based
canonicalization" trick to handle this in tests, but it's often a
challenge for new contributors to get this right, and based on the
regressions this PR originally exposed, we clearly don't get this right
in many cases.

For this reason, I think that it's better to remove this complexity
canonicalization. It will make it much easier to write tests for
commuted cases and make sure that they are handled.
2024-08-21 12:02:54 +02:00

289 lines
18 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=loop-vectorize,instcombine,simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s -S -o - | FileCheck %s
target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv8.1m.main-arm-none-eabi"
define void @arm_abs_q7(ptr nocapture readonly %pSrc, ptr nocapture %pDst, i32 %blockSize) #0 {
; CHECK-LABEL: @arm_abs_q7(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[PSRC2:%.*]] = ptrtoint ptr [[PSRC:%.*]] to i32
; CHECK-NEXT: [[PDST1:%.*]] = ptrtoint ptr [[PDST:%.*]] to i32
; CHECK-NEXT: [[CMP_NOT19:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_NOT19]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
; CHECK: while.body.preheader:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 16
; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
; CHECK-NEXT: br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -16
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[N_VEC]]
; CHECK-NEXT: [[IND_END3:%.*]] = and i32 [[BLOCKSIZE]], 15
; CHECK-NEXT: [[IND_END5:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[N_VEC]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[INDEX]]
; CHECK-NEXT: [[NEXT_GEP7:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[NEXT_GEP]], align 1
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <16 x i8> [[WIDE_LOAD]], zeroinitializer
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq <16 x i8> [[WIDE_LOAD]], <i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128>
; CHECK-NEXT: [[TMP3:%.*]] = sub <16 x i8> zeroinitializer, [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP4:%.*]] = select <16 x i1> [[TMP2]], <16 x i8> <i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127>, <16 x i8> [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = select <16 x i1> [[TMP1]], <16 x i8> [[WIDE_LOAD]], <16 x i8> [[TMP4]]
; CHECK-NEXT: store <16 x i8> [[TMP5]], ptr [[NEXT_GEP7]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 16
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[BLOCKSIZE]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i32 [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi ptr [ [[IND_END5]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[PSRC_ADDR_022:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[BLKCNT_021:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL4]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[PDST_ADDR_020:%.*]] = phi ptr [ [[INCDEC_PTR13:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL6]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[PSRC_ADDR_022]], i32 1
; CHECK-NEXT: [[TMP7:%.*]] = load i8, ptr [[PSRC_ADDR_022]], align 1
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i8 [[TMP7]], 0
; CHECK-NEXT: [[CMP5:%.*]] = icmp eq i8 [[TMP7]], -128
; CHECK-NEXT: [[SUB:%.*]] = sub i8 0, [[TMP7]]
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP5]], i8 127, i8 [[SUB]]
; CHECK-NEXT: [[COND11:%.*]] = select i1 [[CMP1]], i8 [[TMP7]], i8 [[COND]]
; CHECK-NEXT: [[INCDEC_PTR13]] = getelementptr inbounds i8, ptr [[PDST_ADDR_020]], i32 1
; CHECK-NEXT: store i8 [[COND11]], ptr [[PDST_ADDR_020]], align 1
; CHECK-NEXT: [[DEC]] = add i32 [[BLKCNT_021]], -1
; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
; CHECK-NEXT: br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
%cmp.not19 = icmp eq i32 %blockSize, 0
br i1 %cmp.not19, label %while.end, label %while.body.preheader
while.body.preheader: ; preds = %entry
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
%pSrc.addr.022 = phi ptr [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
%blkCnt.021 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
%pDst.addr.020 = phi ptr [ %incdec.ptr13, %while.body ], [ %pDst, %while.body.preheader ]
%incdec.ptr = getelementptr inbounds i8, ptr %pSrc.addr.022, i32 1
%0 = load i8, ptr %pSrc.addr.022, align 1
%cmp1 = icmp sgt i8 %0, 0
%cmp5 = icmp eq i8 %0, -128
%sub = sub i8 0, %0
%cond = select i1 %cmp5, i8 127, i8 %sub
%cond11 = select i1 %cmp1, i8 %0, i8 %cond
%incdec.ptr13 = getelementptr inbounds i8, ptr %pDst.addr.020, i32 1
store i8 %cond11, ptr %pDst.addr.020, align 1
%dec = add i32 %blkCnt.021, -1
%cmp.not = icmp eq i32 %dec, 0
br i1 %cmp.not, label %while.end.loopexit, label %while.body
while.end.loopexit: ; preds = %while.body
br label %while.end
while.end: ; preds = %while.end.loopexit, %entry
ret void
}
define void @arm_abs_q15(ptr nocapture readonly %pSrc, ptr nocapture %pDst, i32 %blockSize) #0 {
; CHECK-LABEL: @arm_abs_q15(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[PSRC2:%.*]] = ptrtoint ptr [[PSRC:%.*]] to i32
; CHECK-NEXT: [[PDST1:%.*]] = ptrtoint ptr [[PDST:%.*]] to i32
; CHECK-NEXT: [[CMP_NOT20:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_NOT20]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
; CHECK: while.body.preheader:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 8
; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
; CHECK-NEXT: br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -8
; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[N_VEC]], 1
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[TMP1]]
; CHECK-NEXT: [[IND_END3:%.*]] = and i32 [[BLOCKSIZE]], 7
; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[N_VEC]], 1
; CHECK-NEXT: [[IND_END5:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[TMP2]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = shl i32 [[INDEX]], 1
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[OFFSET_IDX]]
; CHECK-NEXT: [[OFFSET_IDX7:%.*]] = shl i32 [[INDEX]], 1
; CHECK-NEXT: [[NEXT_GEP8:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[OFFSET_IDX7]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i16>, ptr [[NEXT_GEP]], align 2
; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt <8 x i16> [[WIDE_LOAD]], zeroinitializer
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <8 x i16> [[WIDE_LOAD]], <i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768>
; CHECK-NEXT: [[TMP5:%.*]] = sub <8 x i16> zeroinitializer, [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP6:%.*]] = select <8 x i1> [[TMP4]], <8 x i16> <i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767>, <8 x i16> [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = select <8 x i1> [[TMP3]], <8 x i16> [[WIDE_LOAD]], <8 x i16> [[TMP6]]
; CHECK-NEXT: store <8 x i16> [[TMP7]], ptr [[NEXT_GEP8]], align 2
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 8
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[BLOCKSIZE]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i32 [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi ptr [ [[IND_END5]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[PSRC_ADDR_023:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[BLKCNT_022:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL4]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[PDST_ADDR_021:%.*]] = phi ptr [ [[INCDEC_PTR13:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL6]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[PSRC_ADDR_023]], i32 2
; CHECK-NEXT: [[TMP9:%.*]] = load i16, ptr [[PSRC_ADDR_023]], align 2
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i16 [[TMP9]], 0
; CHECK-NEXT: [[CMP5:%.*]] = icmp eq i16 [[TMP9]], -32768
; CHECK-NEXT: [[SUB:%.*]] = sub i16 0, [[TMP9]]
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP5]], i16 32767, i16 [[SUB]]
; CHECK-NEXT: [[COND11:%.*]] = select i1 [[CMP1]], i16 [[TMP9]], i16 [[COND]]
; CHECK-NEXT: [[INCDEC_PTR13]] = getelementptr inbounds i8, ptr [[PDST_ADDR_021]], i32 2
; CHECK-NEXT: store i16 [[COND11]], ptr [[PDST_ADDR_021]], align 2
; CHECK-NEXT: [[DEC]] = add i32 [[BLKCNT_022]], -1
; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
; CHECK-NEXT: br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
%cmp.not20 = icmp eq i32 %blockSize, 0
br i1 %cmp.not20, label %while.end, label %while.body.preheader
while.body.preheader: ; preds = %entry
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
%pSrc.addr.023 = phi ptr [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
%blkCnt.022 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
%pDst.addr.021 = phi ptr [ %incdec.ptr13, %while.body ], [ %pDst, %while.body.preheader ]
%incdec.ptr = getelementptr inbounds i16, ptr %pSrc.addr.023, i32 1
%0 = load i16, ptr %pSrc.addr.023, align 2
%cmp1 = icmp sgt i16 %0, 0
%cmp5 = icmp eq i16 %0, -32768
%sub = sub i16 0, %0
%cond = select i1 %cmp5, i16 32767, i16 %sub
%cond11 = select i1 %cmp1, i16 %0, i16 %cond
%incdec.ptr13 = getelementptr inbounds i16, ptr %pDst.addr.021, i32 1
store i16 %cond11, ptr %pDst.addr.021, align 2
%dec = add i32 %blkCnt.022, -1
%cmp.not = icmp eq i32 %dec, 0
br i1 %cmp.not, label %while.end.loopexit, label %while.body
while.end.loopexit: ; preds = %while.body
br label %while.end
while.end: ; preds = %while.end.loopexit, %entry
ret void
}
define void @arm_abs_q31(ptr nocapture readonly %pSrc, ptr nocapture %pDst, i32 %blockSize) #0 {
; CHECK-LABEL: @arm_abs_q31(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[PSRC2:%.*]] = ptrtoint ptr [[PSRC:%.*]] to i32
; CHECK-NEXT: [[PDST1:%.*]] = ptrtoint ptr [[PDST:%.*]] to i32
; CHECK-NEXT: [[CMP_NOT14:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_NOT14]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
; CHECK: while.body.preheader:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 4
; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
; CHECK-NEXT: br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -4
; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[N_VEC]], 2
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[TMP1]]
; CHECK-NEXT: [[IND_END3:%.*]] = and i32 [[BLOCKSIZE]], 3
; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[N_VEC]], 2
; CHECK-NEXT: [[IND_END5:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[TMP2]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = shl i32 [[INDEX]], 2
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PSRC]], i32 [[OFFSET_IDX]]
; CHECK-NEXT: [[OFFSET_IDX7:%.*]] = shl i32 [[INDEX]], 2
; CHECK-NEXT: [[NEXT_GEP8:%.*]] = getelementptr i8, ptr [[PDST]], i32 [[OFFSET_IDX7]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[NEXT_GEP]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], zeroinitializer
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
; CHECK-NEXT: [[TMP5:%.*]] = sub nsw <4 x i32> zeroinitializer, [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP6:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>, <4 x i32> [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = select <4 x i1> [[TMP3]], <4 x i32> [[WIDE_LOAD]], <4 x i32> [[TMP6]]
; CHECK-NEXT: store <4 x i32> [[TMP7]], ptr [[NEXT_GEP8]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[BLOCKSIZE]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi i32 [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi ptr [ [[IND_END5]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[PSRC_ADDR_017:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[BLKCNT_016:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL4]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[PDST_ADDR_015:%.*]] = phi ptr [ [[INCDEC_PTR7:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL6]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[PSRC_ADDR_017]], i32 4
; CHECK-NEXT: [[TMP9:%.*]] = load i32, ptr [[PSRC_ADDR_017]], align 4
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP9]], 0
; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[TMP9]], -2147483648
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 0, [[TMP9]]
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP2]], i32 2147483647, i32 [[SUB]]
; CHECK-NEXT: [[COND6:%.*]] = select i1 [[CMP1]], i32 [[TMP9]], i32 [[COND]]
; CHECK-NEXT: [[INCDEC_PTR7]] = getelementptr inbounds i8, ptr [[PDST_ADDR_015]], i32 4
; CHECK-NEXT: store i32 [[COND6]], ptr [[PDST_ADDR_015]], align 4
; CHECK-NEXT: [[DEC]] = add i32 [[BLKCNT_016]], -1
; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
; CHECK-NEXT: br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
%cmp.not14 = icmp eq i32 %blockSize, 0
br i1 %cmp.not14, label %while.end, label %while.body.preheader
while.body.preheader: ; preds = %entry
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
%pSrc.addr.017 = phi ptr [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
%blkCnt.016 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
%pDst.addr.015 = phi ptr [ %incdec.ptr7, %while.body ], [ %pDst, %while.body.preheader ]
%incdec.ptr = getelementptr inbounds i32, ptr %pSrc.addr.017, i32 1
%0 = load i32, ptr %pSrc.addr.017, align 4
%cmp1 = icmp sgt i32 %0, 0
%cmp2 = icmp eq i32 %0, -2147483648
%sub = sub nsw i32 0, %0
%cond = select i1 %cmp2, i32 2147483647, i32 %sub
%cond6 = select i1 %cmp1, i32 %0, i32 %cond
%incdec.ptr7 = getelementptr inbounds i32, ptr %pDst.addr.015, i32 1
store i32 %cond6, ptr %pDst.addr.015, align 4
%dec = add i32 %blkCnt.016, -1
%cmp.not = icmp eq i32 %dec, 0
br i1 %cmp.not, label %while.end.loopexit, label %while.body
while.end.loopexit: ; preds = %while.body
br label %while.end
while.end: ; preds = %while.end.loopexit, %entry
ret void
}
attributes #0 = { "target-features"="+mve" }
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