forked from OSchip/llvm-project
[NFC][LoopIdiom] Add more test case to runtime-determined memset size
This patch supplements missing test case for D107353. - Fix wrong descriptions in 64-bit mode test case - Added testcase under 32-bit mode Reviewed By: bmahjour Differential Revision: https://reviews.llvm.org/D108507
This commit is contained in:
eopXD
parent
d531e5cf58
commit
76db6d8080
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@ -0,0 +1,372 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes="function(loop(indvars,loop-idiom,loop-deletion),simplifycfg)" -S < %s | FileCheck %s
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; Compile command:
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; $ clang -m32 -fno-discard-value-names -O0 -S -emit-llvm -Xclang -disable-O0-optnone Code.c
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; $ bin/opt -S -basic-aa -mem2reg -loop-simplify -lcssa -loop-rotate \
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; -licm -simple-loop-unswitch -enable-nontrivial-unswitch -loop-simplify \
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; -loop-deletion -simplifycfg -indvars Code.ll > CodeOpt.ll
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target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"
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; void PositiveFor32(int *ar, int n, int m)
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; {
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; int i;
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; for (i=0; i<n; ++i) {
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; int *arr = ar + i * m;
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; memset(arr, 0, m * sizeof(int));
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; }
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; }
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define dso_local void @PositiveFor32(i32* %ar, i32 %n, i32 %m) {
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; CHECK-LABEL: @PositiveFor32(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 0, [[N:%.*]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.lr.ph:
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; CHECK-NEXT: [[MUL1:%.*]] = mul i32 [[M:%.*]], 4
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; CHECK-NEXT: [[TMP0:%.*]] = mul i32 [[M]], [[N]]
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[TMP0]], 2
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[AR1]], i8 0, i32 [[TMP1]], i1 false)
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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%mul1 = mul i32 %m, 4
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%i.02 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
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%mul = mul nsw i32 %i.02, %m
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%add.ptr = getelementptr inbounds i32, i32* %ar, i32 %mul
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%0 = bitcast i32* %add.ptr to i8*
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call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %mul1, i1 false)
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%inc = add nsw i32 %i.02, 1
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; void Negative32(int *ar, int n, int m)
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; {
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; int i;
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; for (i=n-1; i>=0; i--) {
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; int *arr = ar + i * m;
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; memset(arr, 0, m * sizeof(int));
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; }
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; }
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define void @NegativeFor32(i32* %ar, i32 %n, i32 %m) {
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; CHECK-LABEL: @NegativeFor32(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
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; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[N:%.*]], 1
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[SUB]], 0
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.lr.ph:
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; CHECK-NEXT: [[MUL1:%.*]] = mul i32 [[M:%.*]], 4
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; CHECK-NEXT: [[TMP0:%.*]] = mul i32 [[M]], [[N]]
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[TMP0]], 2
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[AR1]], i8 0, i32 [[TMP1]], i1 false)
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%sub = sub nsw i32 %n, 1
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%cmp1 = icmp sge i32 %sub, 0
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br i1 %cmp1, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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%mul1 = mul i32 %m, 4
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%i.02 = phi i32 [ %sub, %for.body.lr.ph ], [ %dec, %for.body ]
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%mul = mul nsw i32 %i.02, %m
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%add.ptr = getelementptr inbounds i32, i32* %ar, i32 %mul
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%0 = bitcast i32* %add.ptr to i8*
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call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %mul1, i1 false)
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%dec = add nsw i32 %i.02, -1
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%cmp = icmp sge i32 %dec, 0
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; void NestedFor32(int *ar, int n, int m, int o)
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; {
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; int i, j;
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; for (i=0; i<n; ++i) {
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; for (j=0; j<m; ++j) {
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; int *arr = ar + i * m * o + j * o;
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; memset(arr, 0, o * sizeof(int));
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; }
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; }
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; }
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define void @NestedFor32(i32* %ar, i32 %n, i32 %m, i32 %o) {
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; CHECK-LABEL: @NestedFor32(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AR2:%.*]] = bitcast i32* [[AR:%.*]] to i8*
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; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 0, [[N:%.*]]
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; CHECK-NEXT: [[CMP21:%.*]] = icmp slt i32 0, [[M:%.*]]
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; CHECK-NEXT: [[MUL7:%.*]] = mul i32 [[O:%.*]], 4
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[CMP3]], i1 [[CMP21]], i1 false
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; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_BODY_US_PREHEADER:%.*]], label [[FOR_END10:%.*]]
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; CHECK: for.body.us.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = mul i32 [[O]], [[M]]
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[TMP0]], 2
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; CHECK-NEXT: [[TMP2:%.*]] = mul i32 [[TMP0]], [[N]]
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; CHECK-NEXT: [[TMP3:%.*]] = shl i32 [[TMP2]], 2
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[AR2]], i8 0, i32 [[TMP3]], i1 false)
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; CHECK-NEXT: br label [[FOR_END10]]
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; CHECK: for.end10:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp3 = icmp slt i32 0, %n
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br i1 %cmp3, label %for.body.lr.ph, label %for.end10
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for.body.lr.ph: ; preds = %entry
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%cmp21 = icmp slt i32 0, %m
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%mul7 = mul i32 %o, 4
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br i1 %cmp21, label %for.body.us.preheader, label %for.end10
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for.body.us.preheader: ; preds = %for.body.lr.ph
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br label %for.body.us
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for.body.us: ; preds = %for.body.us.preheader, %for.cond1.for.end_crit_edge.us
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%i.04.us = phi i32 [ %inc9.us, %for.cond1.for.end_crit_edge.us ], [ 0, %for.body.us.preheader ]
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%mul.us = mul nsw i32 %i.04.us, %m
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%mul4.us = mul nsw i32 %mul.us, %o
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%add.ptr.us = getelementptr inbounds i32, i32* %ar, i32 %mul4.us
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br label %for.body3.us
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for.body3.us: ; preds = %for.body.us, %for.body3.us
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%j.02.us = phi i32 [ 0, %for.body.us ], [ %inc.us, %for.body3.us ]
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%mul5.us = mul nsw i32 %j.02.us, %o
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%add.ptr6.us = getelementptr inbounds i32, i32* %add.ptr.us, i32 %mul5.us
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%0 = bitcast i32* %add.ptr6.us to i8*
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call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %mul7, i1 false)
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%inc.us = add nuw nsw i32 %j.02.us, 1
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%exitcond = icmp ne i32 %inc.us, %m
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br i1 %exitcond, label %for.body3.us, label %for.cond1.for.end_crit_edge.us
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for.cond1.for.end_crit_edge.us: ; preds = %for.body3.us
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%inc9.us = add nuw nsw i32 %i.04.us, 1
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%exitcond5 = icmp ne i32 %inc9.us, %n
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br i1 %exitcond5, label %for.body.us, label %for.end10.loopexit
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for.end10.loopexit: ; preds = %for.cond1.for.end_crit_edge.us
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br label %for.end10
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for.end10: ; preds = %for.end10.loopexit, %for.body.lr.ph, %entry
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ret void
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}
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; void PositiveFor64(int *ar, long long n, long long m)
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; {
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; int i;
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; for (i=0; i<n; ++i) {
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; int *arr = ar + i * m;
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; memset(arr, 0, m * sizeof(int));
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; }
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; }
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define dso_local void @PositiveFor64(i32* %ar, i64 %n, i64 %m) #0 {
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; CHECK-LABEL: @PositiveFor64(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i64 0, [[N:%.*]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.lr.ph:
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; CHECK-NEXT: [[MUL3:%.*]] = mul nsw i64 [[M:%.*]], 4
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; CHECK-NEXT: [[CONV4:%.*]] = trunc i64 [[MUL3]] to i32
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[M]] to i32
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[N]] to i32
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; CHECK-NEXT: [[TMP2:%.*]] = mul i32 [[TMP0]], [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = shl i32 [[TMP2]], 2
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[AR1]], i8 0, i32 [[TMP3]], i1 false)
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%cmp1 = icmp slt i64 0, %n
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br i1 %cmp1, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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%mul3 = mul nsw i64 %m, 4
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%conv4 = trunc i64 %mul3 to i32
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%i.02 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
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%conv2 = sext i32 %i.02 to i64
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%mul = mul nsw i64 %conv2, %m
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%idx.ext = trunc i64 %mul to i32
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%add.ptr = getelementptr inbounds i32, i32* %ar, i32 %idx.ext
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%0 = bitcast i32* %add.ptr to i8*
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call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %conv4, i1 false)
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%inc = add nuw nsw i32 %i.02, 1
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%conv = sext i32 %inc to i64
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%cmp = icmp slt i64 %conv, %n
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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; void NegativeFor64(int *ar, long long n, long long m)
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; {
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; int i;
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; for (i=n-1; i>=0; --i) {
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; int *arr = ar + i * m;
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; memset(arr, 0, m * sizeof(int));
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; }
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; }
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define dso_local void @NegativeFor64(i32* %ar, i64 %n, i64 %m) #0 {
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; CHECK-LABEL: @NegativeFor64(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
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; CHECK-NEXT: [[SUB:%.*]] = sub nsw i64 [[N:%.*]], 1
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; CHECK-NEXT: [[CONV:%.*]] = trunc i64 [[SUB]] to i32
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[CONV]], 0
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.lr.ph:
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; CHECK-NEXT: [[MUL3:%.*]] = mul nsw i64 [[M:%.*]], 4
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; CHECK-NEXT: [[CONV4:%.*]] = trunc i64 [[MUL3]] to i32
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[M]] to i32
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; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[CONV]], -1
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; CHECK-NEXT: [[TMP2:%.*]] = mul i32 [[TMP0]], [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = shl i32 [[TMP2]], 2
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[AR1]], i8 0, i32 [[TMP3]], i1 false)
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%sub = sub nsw i64 %n, 1
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%conv = trunc i64 %sub to i32
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%cmp1 = icmp sge i32 %conv, 0
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br i1 %cmp1, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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%mul3 = mul nsw i64 %m, 4
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%conv4 = trunc i64 %mul3 to i32
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%i.02 = phi i32 [ %conv, %for.body.lr.ph ], [ %dec, %for.body ]
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%conv2 = sext i32 %i.02 to i64
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%mul = mul nsw i64 %conv2, %m
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%idx.ext = trunc i64 %mul to i32
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%add.ptr = getelementptr inbounds i32, i32* %ar, i32 %idx.ext
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%0 = bitcast i32* %add.ptr to i8*
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call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %conv4, i1 false)
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%dec = add nsw i32 %i.02, -1
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%cmp = icmp sge i32 %dec, 0
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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; void NestedFor64(int *ar, long long n, long long m, long long o)
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; {
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; int i, j;
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; for (i=0; i<n; ++i) {
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; for (j=0; j<m; j++) {
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; int *arr = ar + i * m * o + j * o;
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; memset(arr, 0, o * sizeof(int));
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; }
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; }
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; }
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define dso_local void @NestedFor64(i32* %ar, i64 %n, i64 %m, i64 %o) #0 {
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; CHECK-LABEL: @NestedFor64(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i64 0, [[N:%.*]]
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; CHECK-NEXT: [[CMP41:%.*]] = icmp slt i64 0, [[M:%.*]]
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; CHECK-NEXT: [[MUL13:%.*]] = mul nsw i64 [[O:%.*]], 4
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; CHECK-NEXT: [[CONV14:%.*]] = trunc i64 [[MUL13]] to i32
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; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[CMP3]], i1 [[CMP41]], i1 false
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; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_BODY_US_PREHEADER:%.*]], label [[FOR_END17:%.*]]
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; CHECK: for.body.us.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[O]], [[M]]
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[TMP0]] to i32
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; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[O]] to i32
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; CHECK-NEXT: [[TMP3:%.*]] = trunc i64 [[M]] to i32
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; CHECK-NEXT: [[TMP4:%.*]] = mul i32 [[TMP2]], [[TMP3]]
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; CHECK-NEXT: [[TMP5:%.*]] = shl i32 [[TMP4]], 2
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; CHECK-NEXT: br label [[FOR_BODY_US:%.*]]
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; CHECK: for.body.us:
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; CHECK-NEXT: [[I_04_US:%.*]] = phi i32 [ [[INC16_US:%.*]], [[FOR_BODY_US]] ], [ 0, [[FOR_BODY_US_PREHEADER]] ]
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; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP1]], [[I_04_US]]
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; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i32, i32* [[AR:%.*]], i32 [[TMP6]]
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; CHECK-NEXT: [[SCEVGEP1:%.*]] = bitcast i32* [[SCEVGEP]] to i8*
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; CHECK-NEXT: [[CONV7_US:%.*]] = sext i32 [[I_04_US]] to i64
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; CHECK-NEXT: [[MUL_US:%.*]] = mul nsw i64 [[CONV7_US]], [[M]]
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; CHECK-NEXT: [[MUL8_US:%.*]] = mul nsw i64 [[MUL_US]], [[O]]
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; CHECK-NEXT: [[IDX_EXT_US:%.*]] = trunc i64 [[MUL8_US]] to i32
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; CHECK-NEXT: [[ADD_PTR_US:%.*]] = getelementptr inbounds i32, i32* [[AR]], i32 [[IDX_EXT_US]]
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 4 [[SCEVGEP1]], i8 0, i32 [[TMP5]], i1 false)
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; CHECK-NEXT: [[INC16_US]] = add nuw nsw i32 [[I_04_US]], 1
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; CHECK-NEXT: [[CONV_US:%.*]] = sext i32 [[INC16_US]] to i64
|
||||
; CHECK-NEXT: [[CMP_US:%.*]] = icmp slt i64 [[CONV_US]], [[N]]
|
||||
; CHECK-NEXT: br i1 [[CMP_US]], label [[FOR_BODY_US]], label [[FOR_END17]]
|
||||
; CHECK: for.end17:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%cmp3 = icmp slt i64 0, %n
|
||||
br i1 %cmp3, label %for.body.lr.ph, label %for.end17
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%cmp41 = icmp slt i64 0, %m
|
||||
%mul13 = mul nsw i64 %o, 4
|
||||
%conv14 = trunc i64 %mul13 to i32
|
||||
br i1 %cmp41, label %for.body.us.preheader, label %for.end17
|
||||
|
||||
for.body.us.preheader: ; preds = %for.body.lr.ph
|
||||
br label %for.body.us
|
||||
|
||||
for.body.us: ; preds = %for.body.us.preheader, %for.cond2.for.end_crit_edge.us
|
||||
%i.04.us = phi i32 [ %inc16.us, %for.cond2.for.end_crit_edge.us ], [ 0, %for.body.us.preheader ]
|
||||
%conv7.us = sext i32 %i.04.us to i64
|
||||
%mul.us = mul nsw i64 %conv7.us, %m
|
||||
%mul8.us = mul nsw i64 %mul.us, %o
|
||||
%idx.ext.us = trunc i64 %mul8.us to i32
|
||||
%add.ptr.us = getelementptr inbounds i32, i32* %ar, i32 %idx.ext.us
|
||||
br label %for.body6.us
|
||||
|
||||
for.body6.us: ; preds = %for.body.us, %for.body6.us
|
||||
%j.02.us = phi i32 [ 0, %for.body.us ], [ %inc.us, %for.body6.us ]
|
||||
%conv9.us = sext i32 %j.02.us to i64
|
||||
%mul10.us = mul nsw i64 %conv9.us, %o
|
||||
%idx.ext11.us = trunc i64 %mul10.us to i32
|
||||
%add.ptr12.us = getelementptr inbounds i32, i32* %add.ptr.us, i32 %idx.ext11.us
|
||||
%0 = bitcast i32* %add.ptr12.us to i8*
|
||||
call void @llvm.memset.p0i8.i32(i8* align 4 %0, i8 0, i32 %conv14, i1 false)
|
||||
%inc.us = add nuw nsw i32 %j.02.us, 1
|
||||
%conv3.us = sext i32 %inc.us to i64
|
||||
%cmp4.us = icmp slt i64 %conv3.us, %m
|
||||
br i1 %cmp4.us, label %for.body6.us, label %for.cond2.for.end_crit_edge.us
|
||||
|
||||
for.cond2.for.end_crit_edge.us: ; preds = %for.body6.us
|
||||
%inc16.us = add nuw nsw i32 %i.04.us, 1
|
||||
%conv.us = sext i32 %inc16.us to i64
|
||||
%cmp.us = icmp slt i64 %conv.us, %n
|
||||
br i1 %cmp.us, label %for.body.us, label %for.end17.loopexit
|
||||
|
||||
for.end17.loopexit: ; preds = %for.cond2.for.end_crit_edge.us
|
||||
br label %for.end17
|
||||
|
||||
for.end17: ; preds = %for.end17.loopexit, %for.body.lr.ph, %entry
|
||||
ret void
|
||||
}
|
||||
|
||||
declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1 immarg)
|
||||
|
|
@ -0,0 +1,360 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt -passes="function(loop(indvars,loop-idiom,loop-deletion),simplifycfg)" -S < %s | FileCheck %s
|
||||
; Compile command:
|
||||
; $ clang -m64 -fno-discard-value-names -O0 -S -emit-llvm -Xclang -disable-O0-optnone Code.c
|
||||
; $ bin/opt -S -basic-aa -mem2reg -loop-simplify -lcssa -loop-rotate \
|
||||
; -licm -simple-loop-unswitch -enable-nontrivial-unswitch -loop-simplify \
|
||||
; -loop-deletion -simplifycfg -indvars Code.ll > CodeOpt.ll
|
||||
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
||||
; void PositiveFor64(int *ar, long long n, long long m)
|
||||
; {
|
||||
; long long i;
|
||||
; for (i=0; i<n; ++i) {
|
||||
; int *arr = ar + i * m;
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
define dso_local void @PositiveFor64(i32* %ar, i64 %n, i64 %m) {
|
||||
; CHECK-LABEL: @PositiveFor64(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i64 0, [[N:%.*]]
|
||||
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[MUL1:%.*]] = mul i64 [[M:%.*]], 4
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[M]], [[N]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[TMP0]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP1]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END]]
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%cmp1 = icmp slt i64 0, %n
|
||||
br i1 %cmp1, label %for.body.lr.ph, label %for.end
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%mul1 = mul i64 %m, 4
|
||||
br label %for.body
|
||||
|
||||
for.body: ; preds = %for.body.lr.ph, %for.body
|
||||
%i.02 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
|
||||
%mul = mul nsw i64 %i.02, %m
|
||||
%add.ptr = getelementptr inbounds i32, i32* %ar, i64 %mul
|
||||
%0 = bitcast i32* %add.ptr to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul1, i1 false)
|
||||
%inc = add nsw i64 %i.02, 1
|
||||
%cmp = icmp slt i64 %inc, %n
|
||||
br i1 %cmp, label %for.body, label %for.end
|
||||
|
||||
for.end: ; preds = %for.body, %entry
|
||||
ret void
|
||||
}
|
||||
; void NegativeFor64(int *ar, long long n, long long m)
|
||||
; {
|
||||
; long long i;
|
||||
; for (i=n-1; i>=0; --i) {
|
||||
; int *arr = ar + i * m;
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
define dso_local void @NegativeFor64(i32* %ar, i64 %n, i64 %m) {
|
||||
; CHECK-LABEL: @NegativeFor64(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i64 [[N:%.*]], 1
|
||||
; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i64 [[SUB]], 0
|
||||
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[MUL1:%.*]] = mul i64 [[M:%.*]], 4
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[M]], [[N]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[TMP0]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP1]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END]]
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%sub = sub nsw i64 %n, 1
|
||||
%cmp1 = icmp sge i64 %sub, 0
|
||||
br i1 %cmp1, label %for.body.lr.ph, label %for.end
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%mul1 = mul i64 %m, 4
|
||||
br label %for.body
|
||||
|
||||
for.body: ; preds = %for.body.lr.ph, %for.body
|
||||
%i.02 = phi i64 [ %sub, %for.body.lr.ph ], [ %dec, %for.body ]
|
||||
%mul = mul nsw i64 %i.02, %m
|
||||
%add.ptr = getelementptr inbounds i32, i32* %ar, i64 %mul
|
||||
%0 = bitcast i32* %add.ptr to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul1, i1 false)
|
||||
%dec = add nsw i64 %i.02, -1
|
||||
%cmp = icmp sge i64 %dec, 0
|
||||
br i1 %cmp, label %for.body, label %for.end
|
||||
|
||||
for.end: ; preds = %for.body, %entry
|
||||
ret void
|
||||
}
|
||||
; void NestedFor64(int *ar, long long n, long long m, long long o)
|
||||
; {
|
||||
; long long i, j;
|
||||
; for (i=0; i<n; ++i) {
|
||||
; for (j=0; j<m; j++) {
|
||||
; int *arr = ar + i * m * o + j * o;
|
||||
; memset(arr, 0, o * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
; }
|
||||
define void @NestedFor64(i32* %ar, i64 %n, i64 %m, i64 %o) {
|
||||
; CHECK-LABEL: @NestedFor64(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR2:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i64 0, [[N:%.*]]
|
||||
; CHECK-NEXT: [[CMP21:%.*]] = icmp slt i64 0, [[M:%.*]]
|
||||
; CHECK-NEXT: [[MUL7:%.*]] = mul i64 [[O:%.*]], 4
|
||||
; CHECK-NEXT: [[OR_COND:%.*]] = select i1 [[CMP3]], i1 [[CMP21]], i1 false
|
||||
; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_BODY_US_PREHEADER:%.*]], label [[FOR_END10:%.*]]
|
||||
; CHECK: for.body.us.preheader:
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[O]], [[M]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[TMP0]], 2
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = mul i64 [[TMP0]], [[N]]
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = shl i64 [[TMP2]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR2]], i8 0, i64 [[TMP3]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END10]]
|
||||
; CHECK: for.end10:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%cmp3 = icmp slt i64 0, %n
|
||||
br i1 %cmp3, label %for.body.lr.ph, label %for.end10
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%cmp21 = icmp slt i64 0, %m
|
||||
%mul7 = mul i64 %o, 4
|
||||
br i1 %cmp21, label %for.body.us.preheader, label %for.end10
|
||||
|
||||
for.body.us.preheader: ; preds = %for.body.lr.ph
|
||||
br label %for.body.us
|
||||
|
||||
for.body.us: ; preds = %for.body.us.preheader, %for.cond1.for.end_crit_edge.us
|
||||
%i.04.us = phi i64 [ %inc9.us, %for.cond1.for.end_crit_edge.us ], [ 0, %for.body.us.preheader ]
|
||||
%mul.us = mul nsw i64 %i.04.us, %m
|
||||
%mul4.us = mul nsw i64 %mul.us, %o
|
||||
%add.ptr.us = getelementptr inbounds i32, i32* %ar, i64 %mul4.us
|
||||
br label %for.body3.us
|
||||
|
||||
for.body3.us: ; preds = %for.body.us, %for.body3.us
|
||||
%j.02.us = phi i64 [ 0, %for.body.us ], [ %inc.us, %for.body3.us ]
|
||||
%mul5.us = mul nsw i64 %j.02.us, %o
|
||||
%add.ptr6.us = getelementptr inbounds i32, i32* %add.ptr.us, i64 %mul5.us
|
||||
%0 = bitcast i32* %add.ptr6.us to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul7, i1 false)
|
||||
%inc.us = add nuw nsw i64 %j.02.us, 1
|
||||
%exitcond = icmp ne i64 %inc.us, %m
|
||||
br i1 %exitcond, label %for.body3.us, label %for.cond1.for.end_crit_edge.us
|
||||
|
||||
for.cond1.for.end_crit_edge.us: ; preds = %for.body3.us
|
||||
%inc9.us = add nuw nsw i64 %i.04.us, 1
|
||||
%exitcond5 = icmp ne i64 %inc9.us, %n
|
||||
br i1 %exitcond5, label %for.body.us, label %for.end10.loopexit
|
||||
|
||||
for.end10.loopexit: ; preds = %for.cond1.for.end_crit_edge.us
|
||||
br label %for.end10
|
||||
|
||||
for.end10: ; preds = %for.end10.loopexit, %for.body.lr.ph, %entry
|
||||
ret void
|
||||
}
|
||||
; void PositiveFor32(int *ar, int n, int m)
|
||||
; {
|
||||
; int i;
|
||||
; for (i=0; i<n; ++i) {
|
||||
; int *arr = ar + i * m;
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
define void @PositiveFor32(i32* %ar, i32 %n, i32 %m) {
|
||||
; CHECK-LABEL: @PositiveFor32(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[N:%.*]] to i64
|
||||
; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i64 0, [[CONV]]
|
||||
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[M:%.*]] to i64
|
||||
; CHECK-NEXT: [[CONV2:%.*]] = sext i32 [[M]] to i64
|
||||
; CHECK-NEXT: [[MUL3:%.*]] = mul i64 [[CONV2]], 4
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[CONV1]], [[CONV]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[TMP0]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP1]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END]]
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%conv = sext i32 %n to i64
|
||||
%cmp1 = icmp slt i64 0, %conv
|
||||
br i1 %cmp1, label %for.body.lr.ph, label %for.end
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%conv1 = sext i32 %m to i64
|
||||
%conv2 = sext i32 %m to i64
|
||||
%mul3 = mul i64 %conv2, 4
|
||||
br label %for.body
|
||||
|
||||
for.body: ; preds = %for.body.lr.ph, %for.body
|
||||
%i.02 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
|
||||
%mul = mul nsw i64 %i.02, %conv1
|
||||
%add.ptr = getelementptr inbounds i32, i32* %ar, i64 %mul
|
||||
%0 = bitcast i32* %add.ptr to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul3, i1 false)
|
||||
%inc = add nsw i64 %i.02, 1
|
||||
%cmp = icmp slt i64 %inc, %conv
|
||||
br i1 %cmp, label %for.body, label %for.end
|
||||
|
||||
for.end: ; preds = %for.body, %entry
|
||||
ret void
|
||||
}
|
||||
; void Negative32(int *ar, int n, int m)
|
||||
; {
|
||||
; long long i;
|
||||
; for (i=n-1; i>=0; i--) {
|
||||
; int *arr = ar + i * m;
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
define void @Negative32(i32* %ar, i32 %n, i32 %m) {
|
||||
; CHECK-LABEL: @Negative32(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[N:%.*]], 1
|
||||
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[SUB]] to i64
|
||||
; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i64 [[CONV]], 0
|
||||
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[M:%.*]] to i64
|
||||
; CHECK-NEXT: [[CONV2:%.*]] = sext i32 [[M]] to i64
|
||||
; CHECK-NEXT: [[MUL3:%.*]] = mul i64 [[CONV2]], 4
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[CONV]], -1
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[CONV1]], [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = shl i64 [[TMP1]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP2]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END]]
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%sub = sub nsw i32 %n, 1
|
||||
%conv = sext i32 %sub to i64
|
||||
%cmp1 = icmp sge i64 %conv, 0
|
||||
br i1 %cmp1, label %for.body.lr.ph, label %for.end
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%conv1 = sext i32 %m to i64
|
||||
%conv2 = sext i32 %m to i64
|
||||
%mul3 = mul i64 %conv2, 4
|
||||
br label %for.body
|
||||
|
||||
for.body: ; preds = %for.body.lr.ph, %for.body
|
||||
%i.02 = phi i64 [ %conv, %for.body.lr.ph ], [ %dec, %for.body ]
|
||||
%mul = mul nsw i64 %i.02, %conv1
|
||||
%add.ptr = getelementptr inbounds i32, i32* %ar, i64 %mul
|
||||
%0 = bitcast i32* %add.ptr to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul3, i1 false)
|
||||
%dec = add nsw i64 %i.02, -1
|
||||
%cmp = icmp sge i64 %dec, 0
|
||||
br i1 %cmp, label %for.body, label %for.end
|
||||
|
||||
for.end: ; preds = %for.body, %entry
|
||||
ret void
|
||||
}
|
||||
; void NestedFor32(int *ar, int n, int m, int o)
|
||||
; {
|
||||
; int i, j;
|
||||
; for (i=0; i<n; ++i) {
|
||||
; for (j=0; j<m; j++) {
|
||||
; int *arr = ar + i * m * o + j * o;
|
||||
; memset(arr, 0, o * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
; }
|
||||
define void @NestedFor32(i32* %ar, i32 %n, i32 %m, i32 %o) {
|
||||
; CHECK-LABEL: @NestedFor32(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 0, [[N:%.*]]
|
||||
; CHECK-NEXT: br i1 [[CMP3]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END11:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[CMP21:%.*]] = icmp slt i32 0, [[M:%.*]]
|
||||
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[O:%.*]] to i64
|
||||
; CHECK-NEXT: [[MUL8:%.*]] = mul i64 [[CONV]], 4
|
||||
; CHECK-NEXT: br i1 [[CMP21]], label [[FOR_BODY_US_PREHEADER:%.*]], label [[FOR_END11]]
|
||||
; CHECK: for.body.us.preheader:
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[O]] to i64
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[M]] to i64
|
||||
; CHECK-NEXT: [[WIDE_TRIP_COUNT10:%.*]] = zext i32 [[N]] to i64
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = mul i64 [[TMP0]], [[TMP1]]
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[M]] to i64
|
||||
; CHECK-NEXT: [[TMP4:%.*]] = mul i64 [[TMP0]], [[TMP3]]
|
||||
; CHECK-NEXT: [[TMP5:%.*]] = shl i64 [[TMP4]], 2
|
||||
; CHECK-NEXT: br label [[FOR_BODY_US:%.*]]
|
||||
; CHECK: for.body.us:
|
||||
; CHECK-NEXT: [[INDVARS_IV6:%.*]] = phi i64 [ 0, [[FOR_BODY_US_PREHEADER]] ], [ [[INDVARS_IV_NEXT7:%.*]], [[FOR_BODY_US]] ]
|
||||
; CHECK-NEXT: [[TMP6:%.*]] = mul i64 [[TMP2]], [[INDVARS_IV6]]
|
||||
; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i32, i32* [[AR:%.*]], i64 [[TMP6]]
|
||||
; CHECK-NEXT: [[SCEVGEP1:%.*]] = bitcast i32* [[SCEVGEP]] to i8*
|
||||
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[M]] to i64
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[SCEVGEP1]], i8 0, i64 [[TMP5]], i1 false)
|
||||
; CHECK-NEXT: [[INDVARS_IV_NEXT7]] = add nuw nsw i64 [[INDVARS_IV6]], 1
|
||||
; CHECK-NEXT: [[EXITCOND11:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT7]], [[WIDE_TRIP_COUNT10]]
|
||||
; CHECK-NEXT: br i1 [[EXITCOND11]], label [[FOR_BODY_US]], label [[FOR_END11]]
|
||||
; CHECK: for.end11:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%cmp3 = icmp slt i32 0, %n
|
||||
br i1 %cmp3, label %for.body.lr.ph, label %for.end11
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%cmp21 = icmp slt i32 0, %m
|
||||
%conv = sext i32 %o to i64
|
||||
%mul8 = mul i64 %conv, 4
|
||||
br i1 %cmp21, label %for.body.us.preheader, label %for.end11
|
||||
|
||||
for.body.us.preheader: ; preds = %for.body.lr.ph
|
||||
%0 = sext i32 %o to i64
|
||||
%1 = sext i32 %m to i64
|
||||
%2 = sext i32 %o to i64
|
||||
%wide.trip.count10 = zext i32 %n to i64
|
||||
br label %for.body.us
|
||||
|
||||
for.body.us: ; preds = %for.body.us.preheader, %for.cond1.for.end_crit_edge.us
|
||||
%indvars.iv6 = phi i64 [ 0, %for.body.us.preheader ], [ %indvars.iv.next7, %for.cond1.for.end_crit_edge.us ]
|
||||
%3 = mul nsw i64 %indvars.iv6, %1
|
||||
%4 = mul nsw i64 %3, %2
|
||||
%add.ptr.us = getelementptr inbounds i32, i32* %ar, i64 %4
|
||||
%wide.trip.count = zext i32 %m to i64
|
||||
br label %for.body3.us
|
||||
|
||||
for.body3.us: ; preds = %for.body.us, %for.body3.us
|
||||
%indvars.iv = phi i64 [ 0, %for.body.us ], [ %indvars.iv.next, %for.body3.us ]
|
||||
%5 = mul nsw i64 %indvars.iv, %0
|
||||
%add.ptr7.us = getelementptr inbounds i32, i32* %add.ptr.us, i64 %5
|
||||
%6 = bitcast i32* %add.ptr7.us to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %6, i8 0, i64 %mul8, i1 false)
|
||||
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
||||
%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
|
||||
br i1 %exitcond, label %for.body3.us, label %for.cond1.for.end_crit_edge.us
|
||||
|
||||
for.cond1.for.end_crit_edge.us: ; preds = %for.body3.us
|
||||
%indvars.iv.next7 = add nuw nsw i64 %indvars.iv6, 1
|
||||
%exitcond11 = icmp ne i64 %indvars.iv.next7, %wide.trip.count10
|
||||
br i1 %exitcond11, label %for.body.us, label %for.end11.loopexit
|
||||
|
||||
for.end11.loopexit: ; preds = %for.cond1.for.end_crit_edge.us
|
||||
br label %for.end11
|
||||
|
||||
for.end11: ; preds = %for.end11.loopexit, %for.body.lr.ph, %entry
|
||||
ret void
|
||||
}
|
||||
|
||||
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg)
|
||||
|
|
@ -1,110 +0,0 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; RUN: opt -passes="function(loop(loop-idiom,loop-deletion),simplifycfg)" -S < %s | FileCheck %s
|
||||
; The C code to generate this testcase:
|
||||
; void test(int n, int m, int *ar)
|
||||
; {
|
||||
; long i;
|
||||
; for (i=0; i<n; ++i) {
|
||||
; int *arr = ar + i * m; // ar[i];
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
; The optimized IR should be similar to the following:
|
||||
; void test(int n, int m, int *ar)
|
||||
; {
|
||||
; memset(ar, 0, m * n * sizeof(int));
|
||||
; }
|
||||
define void @For_PositiveStride(i32* nocapture %ar, i64 %n, i64 %m) {
|
||||
; CHECK-LABEL: @For_PositiveStride(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = shl nuw i64 [[M:%.*]], 2
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[M]], [[N:%.*]]
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = shl i64 [[TMP1]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP2]], i1 false)
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%0 = shl nuw i64 %m, 2
|
||||
br label %for.cond1.preheader
|
||||
|
||||
for.cond1.preheader: ; preds = %for.inc4, %entry
|
||||
%i.017 = phi i64 [ 0, %entry ], [ %inc5, %for.inc4 ]
|
||||
%1 = mul i64 %m, %i.017
|
||||
%scevgep = getelementptr i32, i32* %ar, i64 %1
|
||||
%scevgep1 = bitcast i32* %scevgep to i8*
|
||||
%mul = mul nsw i64 %i.017, %m
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %scevgep1, i8 0, i64 %0, i1 false)
|
||||
br label %for.inc4
|
||||
|
||||
for.inc4: ; preds = %for.cond1.preheader
|
||||
%inc5 = add nuw nsw i64 %i.017, 1
|
||||
%exitcond18.not = icmp eq i64 %inc5, %n
|
||||
br i1 %exitcond18.not, label %for.end6, label %for.cond1.preheader
|
||||
|
||||
for.end6: ; preds = %for.inc4
|
||||
ret void
|
||||
}
|
||||
|
||||
; The C code to generate this testcase:
|
||||
; void test(int n, int m, int *ar)
|
||||
; {
|
||||
; long i;
|
||||
; for (i=n-1; i>=0; i--) {
|
||||
; int *arr = ar + i * m;
|
||||
; memset(arr, 0, m * sizeof(int));
|
||||
; }
|
||||
; }
|
||||
define void @For_NegativeStride(i32* %ar, i32 %n, i32 %m) {
|
||||
; CHECK-LABEL: @For_NegativeStride(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[AR1:%.*]] = bitcast i32* [[AR:%.*]] to i8*
|
||||
; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 [[N:%.*]], 1
|
||||
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[SUB]] to i64
|
||||
; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i64 [[CONV]], 0
|
||||
; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
|
||||
; CHECK: for.body.lr.ph:
|
||||
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[M:%.*]] to i64
|
||||
; CHECK-NEXT: [[CONV2:%.*]] = sext i32 [[M]] to i64
|
||||
; CHECK-NEXT: [[MUL3:%.*]] = mul i64 [[CONV2]], 4
|
||||
; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[CONV]], -1
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[CONV1]], [[TMP0]]
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = shl i64 [[TMP1]], 2
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[AR1]], i8 0, i64 [[TMP2]], i1 false)
|
||||
; CHECK-NEXT: br label [[FOR_END]]
|
||||
; CHECK: for.end:
|
||||
; CHECK-NEXT: ret void
|
||||
;
|
||||
entry:
|
||||
%sub = sub nsw i32 %n, 1
|
||||
%conv = sext i32 %sub to i64
|
||||
%cmp1 = icmp sge i64 %conv, 0
|
||||
br i1 %cmp1, label %for.body.lr.ph, label %for.end
|
||||
|
||||
for.body.lr.ph: ; preds = %entry
|
||||
%conv1 = sext i32 %m to i64
|
||||
%conv2 = sext i32 %m to i64
|
||||
%mul3 = mul i64 %conv2, 4
|
||||
br label %for.body
|
||||
|
||||
for.body: ; preds = %for.body.lr.ph, %for.inc
|
||||
%i.02 = phi i64 [ %conv, %for.body.lr.ph ], [ %dec, %for.inc ]
|
||||
%mul = mul nsw i64 %i.02, %conv1
|
||||
%add.ptr = getelementptr inbounds i32, i32* %ar, i64 %mul
|
||||
%0 = bitcast i32* %add.ptr to i8*
|
||||
call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 %mul3, i1 false)
|
||||
br label %for.inc
|
||||
|
||||
for.inc: ; preds = %for.body
|
||||
%dec = add nsw i64 %i.02, -1
|
||||
%cmp = icmp sge i64 %dec, 0
|
||||
br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
|
||||
|
||||
for.cond.for.end_crit_edge: ; preds = %for.inc
|
||||
br label %for.end
|
||||
|
||||
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
|
||||
ret void
|
||||
}
|
||||
|
||||
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg)
|
||||
Loading…
Reference in New Issue