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llvm-project/llvm/test/Transforms/LoopVectorize/runtime-check.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

392 lines
22 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -aa-pipeline=basic-aa -passes=loop-vectorize,dce,instcombine -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s
; RUN: opt < %s -aa-pipeline= -passes=loop-vectorize -S -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s -check-prefix=FORCED_OPTSIZE
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
; Make sure we vectorize this loop:
; int foo(float *a, float *b, int n) {
; for (int i=0; i<n; ++i)
; a[i] = b[i] * 3;
; }
define i32 @foo(ptr nocapture %a, ptr nocapture %b, i32 %n) nounwind uwtable ssp {
; CHECK-LABEL: @foo(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[B2:%.*]] = ptrtoint ptr [[B:%.*]] to i64, !dbg [[DBG4:![0-9]+]]
; CHECK-NEXT: [[A1:%.*]] = ptrtoint ptr [[A:%.*]] to i64, !dbg [[DBG4]]
; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[N:%.*]], 0, !dbg [[DBG4]]
; CHECK-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]], !dbg [[DBG4]]
; CHECK: for.body.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = zext nneg i32 [[N]] to i64, !dbg [[DBG9:![0-9]+]]
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], 4, !dbg [[DBG9]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]], !dbg [[DBG9]]
; CHECK: vector.memcheck:
; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[A1]], [[B2]], !dbg [[DBG9]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP1]], 16, !dbg [[DBG9]]
; CHECK-NEXT: br i1 [[DIFF_CHECK]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]], !dbg [[DBG9]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP0]], 2147483644, !dbg [[DBG9]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]], !dbg [[DBG9]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ], !dbg [[DBG9]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 [[INDEX]], !dbg [[DBG9]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP2]], align 4, !dbg [[DBG9]]
; CHECK-NEXT: [[TMP3:%.*]] = fmul <4 x float> [[WIDE_LOAD]], <float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00>, !dbg [[DBG9]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDEX]], !dbg [[DBG9]]
; CHECK-NEXT: store <4 x float> [[TMP3]], ptr [[TMP4]], align 4, !dbg [[DBG9]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4, !dbg [[DBG9]]
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]], !dbg [[DBG9]]
; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !dbg [[DBG9]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[TMP0]], !dbg [[DBG9]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]], !dbg [[DBG9]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ], [ 0, [[VECTOR_MEMCHECK]] ], !dbg [[DBG9]]
; CHECK-NEXT: br label [[FOR_BODY:%.*]], !dbg [[DBG9]]
; CHECK: for.body:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], !dbg [[DBG9]]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[B]], i64 [[INDVARS_IV]], !dbg [[DBG9]]
; CHECK-NEXT: [[TMP6:%.*]] = load float, ptr [[ARRAYIDX]], align 4, !dbg [[DBG9]]
; CHECK-NEXT: [[MUL:%.*]] = fmul float [[TMP6]], 3.000000e+00, !dbg [[DBG9]]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDVARS_IV]], !dbg [[DBG9]]
; CHECK-NEXT: store float [[MUL]], ptr [[ARRAYIDX2]], align 4, !dbg [[DBG9]]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1, !dbg [[DBG9]]
; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32, !dbg [[DBG9]]
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[N]], [[LFTR_WIDEIV]], !dbg [[DBG9]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], !dbg [[DBG9]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]], !dbg [[DBG14:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: ret i32 undef, !dbg [[DBG14]]
;
; FORCED_OPTSIZE-LABEL: @foo(
; FORCED_OPTSIZE-NEXT: entry:
; FORCED_OPTSIZE-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[N:%.*]], 0, !dbg [[DBG4:![0-9]+]]
; FORCED_OPTSIZE-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]], !dbg [[DBG4]]
; FORCED_OPTSIZE: for.body.preheader:
; FORCED_OPTSIZE-NEXT: br label [[FOR_BODY:%.*]], !dbg [[DBG9:![0-9]+]]
; FORCED_OPTSIZE: for.body:
; FORCED_OPTSIZE-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ], !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 [[INDVARS_IV]], !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[TMP0:%.*]] = load float, ptr [[ARRAYIDX]], align 4, !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[MUL:%.*]] = fmul float [[TMP0]], 3.000000e+00, !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[INDVARS_IV]], !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: store float [[MUL]], ptr [[ARRAYIDX2]], align 4, !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1, !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32, !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]], !dbg [[DBG9]]
; FORCED_OPTSIZE-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]], !dbg [[DBG9]]
; FORCED_OPTSIZE: for.end.loopexit:
; FORCED_OPTSIZE-NEXT: br label [[FOR_END]], !dbg [[DBG10:![0-9]+]]
; FORCED_OPTSIZE: for.end:
; FORCED_OPTSIZE-NEXT: ret i32 undef, !dbg [[DBG10]]
;
entry:
%cmp6 = icmp sgt i32 %n, 0, !dbg !6
br i1 %cmp6, label %for.body, label %for.end, !dbg !6
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ], !dbg !7
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv, !dbg !7
%0 = load float, ptr %arrayidx, align 4, !dbg !7
%mul = fmul float %0, 3.000000e+00, !dbg !7
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv, !dbg !7
store float %mul, ptr %arrayidx2, align 4, !dbg !7
%indvars.iv.next = add i64 %indvars.iv, 1, !dbg !7
%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !7
%exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !7
br i1 %exitcond, label %for.end, label %for.body, !dbg !7
for.end: ; preds = %for.body, %entry
ret i32 undef, !dbg !8
}
; Make sure that we try to vectorize loops with a runtime check if the
; dependency check fails.
define void @test_runtime_check(ptr %a, float %b, i64 %offset, i64 %offset2, i64 %n) {
; CHECK-LABEL: @test_runtime_check(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
; CHECK: vector.memcheck:
; CHECK-NEXT: [[TMP0:%.*]] = shl i64 [[OFFSET:%.*]], 2
; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[N]], 2
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP1]]
; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[TMP2]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = shl i64 [[OFFSET2:%.*]], 2
; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP3]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP1]]
; CHECK-NEXT: [[SCEVGEP3:%.*]] = getelementptr i8, ptr [[TMP4]], i64 [[TMP3]]
; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[SCEVGEP]], [[SCEVGEP3]]
; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[SCEVGEP2]], [[SCEVGEP1]]
; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], -4
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x float> [[BROADCAST_SPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr float, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr float, ptr [[TMP5]], i64 [[OFFSET]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP6]], align 4, !alias.scope [[META15:![0-9]+]], !noalias [[META18:![0-9]+]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr float, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr float, ptr [[TMP7]], i64 [[OFFSET2]]
; CHECK-NEXT: [[WIDE_LOAD4:%.*]] = load <4 x float>, ptr [[TMP8]], align 4, !alias.scope [[META18]]
; CHECK-NEXT: [[TMP9:%.*]] = fmul fast <4 x float> [[BROADCAST_SPLAT]], [[WIDE_LOAD4]]
; CHECK-NEXT: [[TMP10:%.*]] = fadd fast <4 x float> [[WIDE_LOAD]], [[TMP9]]
; CHECK-NEXT: store <4 x float> [[TMP10]], ptr [[TMP6]], align 4, !alias.scope [[META15]], !noalias [[META18]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP20:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_MEMCHECK]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr float, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: [[ARR_IDX:%.*]] = getelementptr float, ptr [[TMP12]], i64 [[OFFSET]]
; CHECK-NEXT: [[L1:%.*]] = load float, ptr [[ARR_IDX]], align 4
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr float, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: [[ARR_IDX2:%.*]] = getelementptr float, ptr [[TMP13]], i64 [[OFFSET2]]
; CHECK-NEXT: [[L2:%.*]] = load float, ptr [[ARR_IDX2]], align 4
; CHECK-NEXT: [[M:%.*]] = fmul fast float [[B]], [[L2]]
; CHECK-NEXT: [[AD:%.*]] = fadd fast float [[L1]], [[M]]
; CHECK-NEXT: store float [[AD]], ptr [[ARR_IDX]], align 4
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP21:![0-9]+]]
; CHECK: loopexit:
; CHECK-NEXT: ret void
;
; FORCED_OPTSIZE-LABEL: @test_runtime_check(
; FORCED_OPTSIZE-NEXT: entry:
; FORCED_OPTSIZE-NEXT: br label [[FOR_BODY:%.*]]
; FORCED_OPTSIZE: for.body:
; FORCED_OPTSIZE-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; FORCED_OPTSIZE-NEXT: [[IND_SUM:%.*]] = add i64 [[IV]], [[OFFSET:%.*]]
; FORCED_OPTSIZE-NEXT: [[ARR_IDX:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[IND_SUM]]
; FORCED_OPTSIZE-NEXT: [[L1:%.*]] = load float, ptr [[ARR_IDX]], align 4
; FORCED_OPTSIZE-NEXT: [[IND_SUM2:%.*]] = add i64 [[IV]], [[OFFSET2:%.*]]
; FORCED_OPTSIZE-NEXT: [[ARR_IDX2:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IND_SUM2]]
; FORCED_OPTSIZE-NEXT: [[L2:%.*]] = load float, ptr [[ARR_IDX2]], align 4
; FORCED_OPTSIZE-NEXT: [[M:%.*]] = fmul fast float [[B:%.*]], [[L2]]
; FORCED_OPTSIZE-NEXT: [[AD:%.*]] = fadd fast float [[L1]], [[M]]
; FORCED_OPTSIZE-NEXT: store float [[AD]], ptr [[ARR_IDX]], align 4
; FORCED_OPTSIZE-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; FORCED_OPTSIZE-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], [[N:%.*]]
; FORCED_OPTSIZE-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT:%.*]], label [[FOR_BODY]]
; FORCED_OPTSIZE: loopexit:
; FORCED_OPTSIZE-NEXT: ret void
;
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%ind.sum = add i64 %iv, %offset
%arr.idx = getelementptr inbounds float, ptr %a, i64 %ind.sum
%l1 = load float, ptr %arr.idx, align 4
%ind.sum2 = add i64 %iv, %offset2
%arr.idx2 = getelementptr inbounds float, ptr %a, i64 %ind.sum2
%l2 = load float, ptr %arr.idx2, align 4
%m = fmul fast float %b, %l2
%ad = fadd fast float %l1, %m
store float %ad, ptr %arr.idx, align 4
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp eq i64 %iv.next, %n
br i1 %exitcond, label %loopexit, label %for.body
loopexit:
ret void
}
; Check we do not generate runtime checks if we found a known dependence preventing
; vectorization. In this case, it is a read of c[i-1] followed by a write of c[i].
; The runtime checks would always fail.
; void test_runtime_check2(float *a, float b, unsigned offset, unsigned offset2, unsigned n, float *c) {
; for (unsigned i = 1; i < n; i++) {
; a[i+o1] += a[i+o2] + b;
; c[i] = c[i-1] + b;
; }
; }
define void @test_runtime_check2(ptr %a, float %b, i64 %offset, i64 %offset2, i64 %n, ptr %c) {
; CHECK-LABEL: @test_runtime_check2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr float, ptr [[A:%.*]], i64 [[IV]]
; CHECK-NEXT: [[ARR_IDX:%.*]] = getelementptr float, ptr [[TMP0]], i64 [[OFFSET:%.*]]
; CHECK-NEXT: [[L1:%.*]] = load float, ptr [[ARR_IDX]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr float, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: [[ARR_IDX2:%.*]] = getelementptr float, ptr [[TMP1]], i64 [[OFFSET2:%.*]]
; CHECK-NEXT: [[L2:%.*]] = load float, ptr [[ARR_IDX2]], align 4
; CHECK-NEXT: [[M:%.*]] = fmul fast float [[B:%.*]], [[L2]]
; CHECK-NEXT: [[AD:%.*]] = fadd fast float [[L1]], [[M]]
; CHECK-NEXT: store float [[AD]], ptr [[ARR_IDX]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr float, ptr [[C:%.*]], i64 [[IV]]
; CHECK-NEXT: [[C_IDX:%.*]] = getelementptr i8, ptr [[TMP2]], i64 -4
; CHECK-NEXT: [[LC:%.*]] = load float, ptr [[C_IDX]], align 4
; CHECK-NEXT: [[VC:%.*]] = fadd float [[LC]], 1.000000e+00
; CHECK-NEXT: [[C_IDX2:%.*]] = getelementptr inbounds float, ptr [[C]], i64 [[IV]]
; CHECK-NEXT: store float [[VC]], ptr [[C_IDX2]], align 4
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT:%.*]], label [[FOR_BODY]]
; CHECK: loopexit:
; CHECK-NEXT: ret void
;
; FORCED_OPTSIZE-LABEL: @test_runtime_check2(
; FORCED_OPTSIZE-NEXT: entry:
; FORCED_OPTSIZE-NEXT: br label [[FOR_BODY:%.*]]
; FORCED_OPTSIZE: for.body:
; FORCED_OPTSIZE-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; FORCED_OPTSIZE-NEXT: [[IND_SUM:%.*]] = add i64 [[IV]], [[OFFSET:%.*]]
; FORCED_OPTSIZE-NEXT: [[ARR_IDX:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[IND_SUM]]
; FORCED_OPTSIZE-NEXT: [[L1:%.*]] = load float, ptr [[ARR_IDX]], align 4
; FORCED_OPTSIZE-NEXT: [[IND_SUM2:%.*]] = add i64 [[IV]], [[OFFSET2:%.*]]
; FORCED_OPTSIZE-NEXT: [[ARR_IDX2:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IND_SUM2]]
; FORCED_OPTSIZE-NEXT: [[L2:%.*]] = load float, ptr [[ARR_IDX2]], align 4
; FORCED_OPTSIZE-NEXT: [[M:%.*]] = fmul fast float [[B:%.*]], [[L2]]
; FORCED_OPTSIZE-NEXT: [[AD:%.*]] = fadd fast float [[L1]], [[M]]
; FORCED_OPTSIZE-NEXT: store float [[AD]], ptr [[ARR_IDX]], align 4
; FORCED_OPTSIZE-NEXT: [[C_IND:%.*]] = add i64 [[IV]], -1
; FORCED_OPTSIZE-NEXT: [[C_IDX:%.*]] = getelementptr inbounds float, ptr [[C:%.*]], i64 [[C_IND]]
; FORCED_OPTSIZE-NEXT: [[LC:%.*]] = load float, ptr [[C_IDX]], align 4
; FORCED_OPTSIZE-NEXT: [[VC:%.*]] = fadd float [[LC]], 1.000000e+00
; FORCED_OPTSIZE-NEXT: [[C_IDX2:%.*]] = getelementptr inbounds float, ptr [[C]], i64 [[IV]]
; FORCED_OPTSIZE-NEXT: store float [[VC]], ptr [[C_IDX2]], align 4
; FORCED_OPTSIZE-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; FORCED_OPTSIZE-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], [[N:%.*]]
; FORCED_OPTSIZE-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT:%.*]], label [[FOR_BODY]]
; FORCED_OPTSIZE: loopexit:
; FORCED_OPTSIZE-NEXT: ret void
;
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%ind.sum = add i64 %iv, %offset
%arr.idx = getelementptr inbounds float, ptr %a, i64 %ind.sum
%l1 = load float, ptr %arr.idx, align 4
%ind.sum2 = add i64 %iv, %offset2
%arr.idx2 = getelementptr inbounds float, ptr %a, i64 %ind.sum2
%l2 = load float, ptr %arr.idx2, align 4
%m = fmul fast float %b, %l2
%ad = fadd fast float %l1, %m
store float %ad, ptr %arr.idx, align 4
%c.ind = add i64 %iv, -1
%c.idx = getelementptr inbounds float, ptr %c, i64 %c.ind
%lc = load float, ptr %c.idx, align 4
%vc = fadd float %lc, 1.0
%c.idx2 = getelementptr inbounds float, ptr %c, i64 %iv
store float %vc, ptr %c.idx2
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp eq i64 %iv.next, %n
br i1 %exitcond, label %loopexit, label %for.body
loopexit:
ret void
}
define dso_local void @forced_optsize(ptr noalias nocapture readonly %x_p, ptr noalias nocapture readonly %y_p, ptr noalias nocapture %z_p) minsize optsize {
; CHECK-LABEL: @forced_optsize(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i64, ptr [[X_P:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i64>, ptr [[TMP0]], align 8
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[Y_P:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <2 x i64>, ptr [[TMP1]], align 8
; CHECK-NEXT: [[TMP2:%.*]] = add nsw <2 x i64> [[WIDE_LOAD1]], [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[Z_P:%.*]], i64 [[INDEX]]
; CHECK-NEXT: store <2 x i64> [[TMP2]], ptr [[TMP3]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP22:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: br i1 poison, label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP23:![0-9]+]]
;
; FORCED_OPTSIZE-LABEL: @forced_optsize(
; FORCED_OPTSIZE-NEXT: entry:
; FORCED_OPTSIZE-NEXT: br label [[FOR_BODY:%.*]]
; FORCED_OPTSIZE: for.cond.cleanup:
; FORCED_OPTSIZE-NEXT: ret void
; FORCED_OPTSIZE: for.body:
; FORCED_OPTSIZE-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; FORCED_OPTSIZE-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[X_P:%.*]], i64 [[INDVARS_IV]]
; FORCED_OPTSIZE-NEXT: [[TMP0:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; FORCED_OPTSIZE-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i64, ptr [[Y_P:%.*]], i64 [[INDVARS_IV]]
; FORCED_OPTSIZE-NEXT: [[TMP1:%.*]] = load i64, ptr [[ARRAYIDX2]], align 8
; FORCED_OPTSIZE-NEXT: [[ADD:%.*]] = add nsw i64 [[TMP1]], [[TMP0]]
; FORCED_OPTSIZE-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i64, ptr [[Z_P:%.*]], i64 [[INDVARS_IV]]
; FORCED_OPTSIZE-NEXT: store i64 [[ADD]], ptr [[ARRAYIDX4]], align 8
; FORCED_OPTSIZE-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; FORCED_OPTSIZE-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 128
; FORCED_OPTSIZE-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
;
entry:
br label %for.body
for.cond.cleanup:
ret void
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i64, ptr %x_p, i64 %indvars.iv
%0 = load i64, ptr %arrayidx, align 8
%arrayidx2 = getelementptr inbounds i64, ptr %y_p, i64 %indvars.iv
%1 = load i64, ptr %arrayidx2, align 8
%add = add nsw i64 %1, %0
%arrayidx4 = getelementptr inbounds i64, ptr %z_p, i64 %indvars.iv
store i64 %add, ptr %arrayidx4, align 8
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 128
br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !12
}
; CHECK: !9 = !DILocation(line: 101, column: 1, scope: !{{.*}})
!llvm.module.flags = !{!0, !1}
!llvm.dbg.cu = !{!9}
!0 = !{i32 2, !"Dwarf Version", i32 4}
!1 = !{i32 2, !"Debug Info Version", i32 3}
!2 = !{}
!3 = !DISubroutineType(types: !2)
!4 = !DIFile(filename: "test.cpp", directory: "/tmp")
!5 = distinct !DISubprogram(name: "foo", scope: !4, file: !4, line: 99, type: !3, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !9, retainedNodes: !2)
!6 = !DILocation(line: 100, column: 1, scope: !5)
!7 = !DILocation(line: 101, column: 1, scope: !5)
!8 = !DILocation(line: 102, column: 1, scope: !5)
!9 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
file: !10,
isOptimized: true, flags: "-O2",
splitDebugFilename: "abc.debug", emissionKind: 2)
!10 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
!11 = !{i32 2, !"Debug Info Version", i32 3}
!12 = distinct !{!12, !13, !14}
!13 = !{!"llvm.loop.vectorize.width", i32 2}
!14 = !{!"llvm.loop.vectorize.enable", i1 true}
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