derek.holloway
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60 lines
3.0 KiB
LLVM
60 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=loop-reduce -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
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define void @test(ptr %p, i64 %idx) {
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; CHECK-LABEL: define void @test(
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; CHECK-SAME: ptr [[P:%.*]], i64 [[IDX:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [4 x [4 x i32]], align 16
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[ALLOCA]])
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; CHECK-NEXT: [[TMP0:%.*]] = shl i64 [[IDX]], 6
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; CHECK-NEXT: [[TMP1:%.*]] = add nuw nsw i64 [[TMP0]], 48
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; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[TMP1]]
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; CHECK-NEXT: [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[ALLOCA]], i64 48
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], %[[LOOP]] ], [ -8, %[[ENTRY]] ]
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; CHECK-NEXT: [[TMP2:%.*]] = shl nsw i64 [[LSR_IV]], 2
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; CHECK-NEXT: [[SCEVGEP8:%.*]] = getelementptr i8, ptr [[P]], i64 [[TMP2]]
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; CHECK-NEXT: [[SCEVGEP9:%.*]] = getelementptr i8, ptr [[SCEVGEP8]], i64 32
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; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[SCEVGEP9]], align 4
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; CHECK-NEXT: [[SCEVGEP6:%.*]] = getelementptr i8, ptr [[P]], i64 [[LSR_IV]]
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; CHECK-NEXT: [[SCEVGEP7:%.*]] = getelementptr i8, ptr [[SCEVGEP6]], i64 8
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; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[SCEVGEP7]], align 4
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; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr i8, ptr [[SCEVGEP3]], i64 [[LSR_IV]]
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; CHECK-NEXT: [[SCEVGEP5:%.*]] = getelementptr i8, ptr [[SCEVGEP4]], i64 8
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; CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[SCEVGEP5]], align 4
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; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[SCEVGEP]], i64 [[LSR_IV]]
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; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[SCEVGEP1]], i64 8
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; CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[SCEVGEP2]], align 4
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], 4
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[LSR_IV_NEXT]], 0
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[LOOP]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[ALLOCA]])
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; CHECK-NEXT: ret void
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;
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entry:
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%alloca = alloca [4 x [4 x i32]], align 16
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call void @llvm.lifetime.start.p0(ptr %alloca)
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br label %loop
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loop:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %loop ]
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%gep1 = getelementptr [4 x [12 x [4 x [4 x i32]]]], ptr %p, i64 0, i64 0, i64 0, i64 %indvars.iv, i64 0
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%0 = load i32, ptr %gep1, align 4
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%gep2 = getelementptr [6 x [4 x [4 x i32]]], ptr %p, i64 0, i64 0, i64 0, i64 %indvars.iv
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%1 = load i32, ptr %gep2, align 4
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%gep3 = getelementptr [4 x [4 x i32]], ptr %alloca, i64 0, i64 3, i64 %indvars.iv
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%2 = load i32, ptr %gep3, align 4
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%gep4 = getelementptr [6 x [4 x [4 x i32]]], ptr %p, i64 0, i64 %idx, i64 3, i64 %indvars.iv
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%3 = load i32, ptr %gep4, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv, 1
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br i1 %exitcond.not, label %exit, label %loop
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exit:
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call void @llvm.lifetime.end.p0(ptr %alloca)
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ret void
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}
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