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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 | ||
; RUN: opt < %s -passes=instcombine -S | FileCheck %s | ||
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; test that when offset is know while indexing arrays | ||
; folding optimization takes place on the addition which gets folded into an OR | ||
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" | ||
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define ptr @test(ptr %arr, i32 %conv) { | ||
; CHECK-LABEL: define ptr @test( | ||
; CHECK-SAME: ptr [[ARR:%.*]], i32 [[CONV:%.*]]) { | ||
; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[CONV]] to i64 | ||
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i8, ptr [[ARR]], i64 [[TMP1]] | ||
; CHECK-NEXT: [[ARRAYIDX9:%.*]] = getelementptr i8, ptr [[TMP2]], i64 1 | ||
; CHECK-NEXT: ret ptr [[ARRAYIDX9]] | ||
; | ||
%or7 = or disjoint i32 %conv, 1 | ||
%idxprom8 = zext nneg i32 %or7 to i64 | ||
%arrayidx9 = getelementptr i8, ptr %arr, i64 %idxprom8 | ||
ret ptr %arrayidx9 | ||
} |