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2f69ee6563
This adds a cost model that takes into account the total number of machine instructions to be removed from each region, the number of instructions added by adding a new function with a set of instructions, and the instructions added by handling arguments. Tests not adding flags: llvm/test/Transforms/IROutliner/outlining-cost-model.ll Reviewers: jroelofs, paquette Differential Revision: https://reviews.llvm.org/D87299
50 lines
1.4 KiB
LLVM
50 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; Show that we do not extract phi nodes as it would require extra label and
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; control flow checking.
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define void @function1(i32* %a, i32* %b) {
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; CHECK-LABEL: @function1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FIRST:%.*]]
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; CHECK: first:
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; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ 3, [[NEXT:%.*]] ]
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; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A:%.*]], i32* [[B:%.*]])
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; CHECK-NEXT: ret void
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; CHECK: next:
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; CHECK-NEXT: br label [[FIRST]]
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;
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entry:
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br label %first
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first:
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%0 = phi i32 [ 0, %entry ], [ 3, %next ]
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store i32 2, i32* %a, align 4
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store i32 3, i32* %b, align 4
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ret void
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next:
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br label %first
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}
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define void @function2(i32* %a, i32* %b) {
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; CHECK-LABEL: @function2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FIRST:%.*]]
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; CHECK: first:
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; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ 3, [[NEXT:%.*]] ]
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; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A:%.*]], i32* [[B:%.*]])
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; CHECK-NEXT: ret void
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; CHECK: next:
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; CHECK-NEXT: br label [[FIRST]]
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;
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entry:
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br label %first
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first:
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%0 = phi i32 [ 0, %entry ], [ 3, %next ]
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store i32 2, i32* %a, align 4
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store i32 3, i32* %b, align 4
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ret void
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next:
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br label %first
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}
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