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llvm-mirror/test/Other/debugcounter-dce.ll
George Burgess IV 0e8ba1b7ab [DCE] Add DebugCounter support
Patch by Zhizhou Yang!

Differential Revision: https://reviews.llvm.org/D50092

llvm-svn: 342170
2018-09-13 20:29:50 +00:00

21 lines
621 B
LLVM

; REQUIRES: asserts
; RUN: opt -dce -S -debug-counter=dce-transform-skip=1,dce-transform-count=2 < %s | FileCheck %s
;; Test that, with debug counters on, we will skip the first DCE opportunity, perform next 2,
;; and ignore all the others left.
; CHECK-LABEL: @test
; CHECK-NEXT: %add1 = add i32 1, 2
; CHECK-NEXT: %sub1 = sub i32 %add1, 1
; CHECK-NEXT: %add2 = add i32 1, 2
; CHECK-NEXT: %add3 = add i32 1, 2
; CHECK-NEXT: ret void
define void @test() {
%add1 = add i32 1, 2
%sub1 = sub i32 %add1, 1
%add2 = add i32 1, 2
%sub2 = sub i32 %add2, 1
%add3 = add i32 1, 2
%sub3 = sub i32 %add3, 1
ret void
}