derek.holloway
7502bf64a4
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45 lines
1.4 KiB
LLVM
45 lines
1.4 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-fusion < %s | FileCheck %s
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define void @hoist_preheader(i32 %N) {
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; CHECK-LABEL: define void @hoist_preheader(
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; CHECK-SAME: i32 [[N:%.*]]) {
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; CHECK-NEXT: [[PRE1:.*]]:
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; CHECK-NEXT: [[HOISTME:%.*]] = add i32 1, [[N]]
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; CHECK-NEXT: [[HOISTME2:%.*]] = add i32 1, [[HOISTME]]
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; CHECK-NEXT: br label %[[BODY1:.*]]
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; CHECK: [[BODY1]]:
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; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], %[[BODY1]] ], [ 0, %[[PRE1]] ]
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; CHECK-NEXT: [[I2:%.*]] = phi i32 [ [[I_NEXT2:%.*]], %[[BODY1]] ], [ 0, %[[PRE1]] ]
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; CHECK-NEXT: [[I_NEXT]] = add i32 1, [[I]]
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; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], [[N]]
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; CHECK-NEXT: [[I_NEXT2]] = add i32 1, [[I2]]
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; CHECK-NEXT: [[COND2:%.*]] = icmp ne i32 [[I2]], [[N]]
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; CHECK-NEXT: br i1 [[COND2]], label %[[BODY1]], label %[[EXIT:.*]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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pre1:
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br label %body1
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body1: ; preds = %pre1, %body1
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%i = phi i32 [%i_next, %body1], [0, %pre1]
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%i_next = add i32 1, %i
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%cond = icmp ne i32 %i, %N
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br i1 %cond, label %body1, label %pre2
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pre2:
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%hoistme = add i32 1, %N
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%hoistme2 = add i32 1, %hoistme
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br label %body2
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body2: ; preds = %pre2, %body2
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%i2 = phi i32 [%i_next2, %body2], [0, %pre2]
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%i_next2 = add i32 1, %i2
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%cond2 = icmp ne i32 %i2, %N
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br i1 %cond2, label %body2, label %exit
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exit:
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ret void
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}
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