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18fcd57acc
Reviewers: reames, spatel, davide, dberlin Subscribers: mcrosier, llvm-commits Differential Revision: https://reviews.llvm.org/D45162 llvm-svn: 329443
28 lines
785 B
LLVM
28 lines
785 B
LLVM
; REQUIRES: asserts
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; RUN: opt -S -debug-counter=early-cse-skip=1,early-cse-count=1 -early-cse < %s 2>&1 | FileCheck %s
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;; Test that, with debug counters on, we only optimize the second CSE opportunity.
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define i32 @test(i32 %a, i32 %b) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: %add1 = add i32 %a, %b
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; CHECK-NEXT: %add2 = add i32 %a, %b
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; CHECK-NEXT: %add4 = add i32 %a, %b
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; CHECK-NEXT: %ret1 = add i32 %add1, %add2
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; CHECK-NEXT: %ret2 = add i32 %add1, %add4
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; CHECK-NEXT: %ret = add i32 %ret1, %ret2
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; CHECK-NEXT: ret i32 %ret
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;
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bb:
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%add1 = add i32 %a, %b
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%add2 = add i32 %a, %b
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%add3 = add i32 %a, %b
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%add4 = add i32 %a, %b
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%ret1 = add i32 %add1, %add2
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%ret2 = add i32 %add3, %add4
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%ret = add i32 %ret1, %ret2
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ret i32 %ret
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}
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