derek.holloway
7502bf64a4
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127 lines
5.5 KiB
LLVM
127 lines
5.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
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; RUN: opt -passes=loop-idiom < %s -S | FileCheck %s
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target datalayout = "e-p:64:64:64:32-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"
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target triple = "x86_64-apple-darwin10.0.0"
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;void test(int *f, unsigned n) {
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; for (unsigned i = 0; i < 2 * n; i += 2) {
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; f[i] = 0;
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; f[i+1] = 0;
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; }
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;}
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define void @test(ptr %f, i32 %n) nounwind ssp {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = shl i32 [[N:%.*]], 1
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[TMP0]], 0
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[TMP0]], -1
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; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP1]], 1
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; CHECK-NEXT: [[TMP3:%.*]] = shl i32 [[TMP2]], 3
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; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[TMP3]], 8
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; CHECK-NEXT: call void @llvm.memset.p0.i32(ptr align 4 [[F:%.*]], i8 0, i32 [[TMP4]], i1 false)
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[F]], i32 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP5:%.*]] = or disjoint i32 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[F]], i32 [[TMP5]]
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i32 [[INDVARS_IV]], 2
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INDVARS_IV_NEXT]], [[TMP0]]
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
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; CHECK: for.end.loopexit:
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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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%0 = shl i32 %n, 1
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%cmp1 = icmp eq i32 %0, 0
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br i1 %cmp1, label %for.end, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, ptr %f, i32 %indvars.iv
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store i32 0, ptr %arrayidx, align 4
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%1 = or disjoint i32 %indvars.iv, 1
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%arrayidx2 = getelementptr inbounds i32, ptr %f, i32 %1
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store i32 0, ptr %arrayidx2, align 4
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%indvars.iv.next = add nuw nsw i32 %indvars.iv, 2
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%cmp = icmp ult i32 %indvars.iv.next, %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 test_pattern(int *f, unsigned n) {
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; for (unsigned i = 0; i < 2 * n; i += 2) {
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; f[i] = 2;
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; f[i+1] = 2;
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; }
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;}
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define void @test_pattern(ptr %f, i32 %n) nounwind ssp {
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; CHECK-LABEL: @test_pattern(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MUL:%.*]] = shl i32 [[N:%.*]], 1
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[MUL]], 0
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[MUL]], -1
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[TMP0]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = add nuw i32 [[TMP1]], 1
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; CHECK-NEXT: [[TMP3:%.*]] = mul i32 [[TMP2]], 2
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; CHECK-NEXT: call void @llvm.experimental.memset.pattern.p0.i32.i32(ptr align 4 [[F:%.*]], i32 2, i32 [[TMP3]], i1 false)
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[F]], i32 [[INDVARS_IV]]
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; CHECK-NEXT: [[X1:%.*]] = or disjoint i32 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[F]], i32 [[X1]]
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i32 [[INDVARS_IV]], 2
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INDVARS_IV_NEXT]], [[MUL]]
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
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; CHECK: for.end.loopexit:
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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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%mul = shl i32 %n, 1
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%cmp1 = icmp eq i32 %mul, 0
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br i1 %cmp1, label %for.end, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, ptr %f, i32 %indvars.iv
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store i32 2, ptr %arrayidx, align 4
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%x1 = or disjoint i32 %indvars.iv, 1
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%arrayidx2 = getelementptr inbounds i32, ptr %f, i32 %x1
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store i32 2, ptr %arrayidx2, align 4
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%indvars.iv.next = add nuw nsw i32 %indvars.iv, 2
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%cmp = icmp ult i32 %indvars.iv.next, %mul
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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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;.
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; CHECK: attributes #[[ATTR0:[0-9]+]] = { nounwind ssp }
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; CHECK: attributes #[[ATTR1:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: write) }
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;.
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